---
product_id: 261470706
title: "BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten"
brand: "boss"
price: "510.86 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Boss"
url: https://www.desertcart.tn/products/261470706-boss-coffee-by-suntory-rainbow-mountain-blend-japanese-flash-brew
store_origin: TN
region: Tunisia
---

# Espresso doubleshot strength Unique Rainbow Mountain Blend Authentic Japanese origin BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten

**Brand:** boss
**Price:** 510.86 DT
**Availability:** ✅ In Stock

## Summary

> 🌟 Sip the legend: Japan’s #1 canned coffee, now fueling your hustle!

## Quick Answers

- **What is this?** BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten by boss
- **How much does it cost?** 510.86 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/261470706-boss-coffee-by-suntory-rainbow-mountain-blend-japanese-flash-brew)

## Best For

- boss enthusiasts

## Why This Product

- Trusted boss brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Balanced Sweet & Bitter:** Flash brewed for smooth, crave-worthy taste without harsh bitterness
- • **Ready-to-Drink Convenience:** 6oz portable can for on-the-go energy anytime
- • **Power-Packed Caffeine Boost:** 110mg naturally brewed caffeine—double espresso in a can
- • **Premium Rainbow Mountain Blend:** Expertly sourced beans from 7 Guatemalan regions for a complex flavor
- • **Iconic No.1 Canned Coffee in Japan:** Trusted by millions, perfected over 30 years

## Overview

BOSS Coffee by Suntory’s Rainbow Mountain Blend is Japan’s top-selling canned coffee, expertly flash brewed from premium Guatemalan beans. Each 6oz can delivers a smooth, balanced espresso doubleshot with 110mg caffeine and a hint of milk and sugar, all gluten-free and ready to energize your busy lifestyle with authentic Japanese coffee culture.

## Description

desertcart.com: BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten : Grocery & Gourmet Food

Review: My favorite beverage on the face of the earth - Was never a coffee person until I went to Japan. I’ve tried Starbucks, Dunkin, local coffee houses near me, and sure I like a hot chocolate every now and then, but never could I get into coffee. The bitterness was always too much. But then I went to Japan, and tried this canned coffee at the recommendation of a friend who bought it at FamilyMart on a whim. Immediately, my life transformed before my very eyes. I became buff. Women threw themselves at me. All of my problems solved themselves. I got my dream job. I became rich. I was no longer mentally ill. And most importantly of all, I found a coffee I actually liked. It’s got just the right blend of sweet and bitter that doesn’t make me want to spit it out immediately. I love this coffee so much I make a 6oz can last 2-3 hours. Any quicker would be sacrilege. It’s a shame it costs so much money but the financial burden is worth it to me, because it’s a nice little treat in the morning which also helps curb my body’s apparent constant need for sugar (only 20% DV? Crazy!!). Don’t go for that crappy canned Starbucks you see at convenience stores, go the extra mile and get BOSS coffee, because it will change your life like it did mine.
Review: Delish! Worth Every Penny, No Doubt! - Not quite as pristine as the black but still so yummy. They call it BOSS for good reason… it leads head and shoulders above the rest! Slightly smokey, clean and smooth. Perfect pick me up treat in the afternoon. I regret nothing!

## Features

- NO.1 CANNED COFFEE BRAND IN JAPAN - Conveniently found in vending machines and convenience stores across the country, Suntory has innovated BOSS Coffee for over 30 years to become the no.1 canned coffee brand in Japan (2021, Intage).
- RAINBOW MOUNTAIN BLEND - Using beans sourced from seven grow regions managed by Guatemalan Coffee Association farmers, Suntory’s expert brewers blend the unique flavors produced in diverse climates to create our signature Rainbow Mountain Blend.
- STRAIGHT FROM JAPAN - Due to popular demand from BOSS fans, we are delighted to bring Rainbow Mountain Blend, with the same great packaging and flavor as in Japan, to the US market. Enjoy an authentic taste of Japanese coffee culture.
- READY TO DRINK COFFEE - Rainbow Mountain's 6 fl.oz can is perfect to slip into a pocket or bag and take on-the-go for a high quality coffee pick-me-up anytime, anywhere.
- NATURALLY BREWED CAFFEINE - With only 70 calories and 110mg of naturally brewed caffeine, don't underestimate this handy can size. Rainbow Mountain Blend packs the equivalent of a doubleshot of espresso in every can, more than enough to get you going.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08L4KNBV6 |
| Age Range Description | 18+ |
| Allergen Information | Milk |
| Best Sellers Rank | #24,249 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #29 in Ready to Drink Liquid Coffee |
| Brand | BOSS |
| Brand Name | BOSS |
| Caffeine Content Description | Caffeinated |
| Caffeine Content Per Serving | 110 Milligrams |
| Certificate Type | JPPS |
| Coffee Blend Name | Rainbow Mountain Blend |
| Coffee Roast Level | Light Roast |
| Coffee Type | Prepared Coffee Drink |
| Container Type | Can |
| Country as Labeled | Japan |
| Customer Reviews | 4.6 out of 5 stars 1,123 Reviews |
| Diet Type | Gluten Free |
| Flavor | Coffee with milk and sugar |
| Item Dimensions | 2.08 x 2.08 x 4.13 inches |
| Item Form | Liquid |
| Item Package Weight | 2.77 Kilograms |
| Item Type Name | Canned Coffee |
| Item Volume | 2128.8 Milliliters |
| Item Weight | 0.38 Pounds |
| Liquid Contents Description | Coffee |
| Manufacturer | Suntory B&F N.A. |
| Number of Items | 12 |
| Package Information | Can |
| Region of Origin | Japan |
| Roast Level | Light Roast |
| Size | 6 Fl Oz (Pack of 12) |
| Special Ingredients | Milk, Sugar |
| Specialty | Flash Brew |
| Sweetness Description | sweet |
| UPC | 088857019949 |
| Unit Count | 72.0 Fluid Ounces |
| Variety | Rainbow Mountain Blend |

## Product Details

- **Brand:** BOSS
- **Caffeine Content Description:** Caffeinated
- **Flavor:** Coffee with milk and sugar
- **Item Form:** Liquid
- **Roast Level:** Light Roast

## Images

![BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten - Image 1](https://m.media-amazon.com/images/I/819RtFl76DL.jpg)

## Questions & Answers

**Q: Anyone know if this is actually brewed and canned in japan, or is it just the recipe from japan and canned in the us?**
A: Thank you for your interest in BOSS coffee.
All BOSS US products (At Cafe Au Lait, Rainbow Mountain and Black) are brewed and canned in japan.
They are all exported from Japan.
We hope you will enjoy BOSS coffee!

**Q: Do these need to or can be refrigerated?**
A: They do not have to be refrigerated . They taste better hot or cold. I prefer cold.

**Q: Anyone know why only the coffee is sold and not the tea? Tried contacting seller but no luck so posting here in hopes for a reply.**
A: Probably gauging interest in the brand. If you’re in the US, coffee is universally more consumed than tea (I prefer tea). The coffee being available online is relatively new. They also must be experiencing difficulties in the warehouse as there are tons of cans that will arrive dented and damaged while the outer box looks untouched. This appears to be an issue with how the individual cans are packaged as opposed to Amazon delivery methods. So TLDR: give it some time and they might bring tea as well

**Q: Once empty, can these cans be crushed?**
A: If you put enough force into it then yeah, they should be crushable

## Customer Reviews

### ⭐⭐⭐⭐⭐ My favorite beverage on the face of the earth
*by M***N on October 27, 2024*

Was never a coffee person until I went to Japan. I’ve tried Starbucks, Dunkin, local coffee houses near me, and sure I like a hot chocolate every now and then, but never could I get into coffee. The bitterness was always too much. But then I went to Japan, and tried this canned coffee at the recommendation of a friend who bought it at FamilyMart on a whim. Immediately, my life transformed before my very eyes. I became buff. Women threw themselves at me. All of my problems solved themselves. I got my dream job. I became rich. I was no longer mentally ill. And most importantly of all, I found a coffee I actually liked. It’s got just the right blend of sweet and bitter that doesn’t make me want to spit it out immediately. I love this coffee so much I make a 6oz can last 2-3 hours. Any quicker would be sacrilege. It’s a shame it costs so much money but the financial burden is worth it to me, because it’s a nice little treat in the morning which also helps curb my body’s apparent constant need for sugar (only 20% DV? Crazy!!). Don’t go for that crappy canned Starbucks you see at convenience stores, go the extra mile and get BOSS coffee, because it will change your life like it did mine.

### ⭐⭐⭐⭐⭐ Delish! Worth Every Penny, No Doubt!
*by P***U on June 15, 2026*

Not quite as pristine as the black but still so yummy. They call it BOSS for good reason… it leads head and shoulders above the rest! Slightly smokey, clean and smooth. Perfect pick me up treat in the afternoon. I regret nothing!

### ⭐⭐⭐⭐⭐ Refilled my HEAT gauge.
*by D***D on May 12, 2026*

Bought this as a fan of Yakuza, got made a fan of BOSS coffee. Genuinely, insanely good coffee that beats the hell out of Starbucks RTD's which by my estimation, are far more concerned with sugar than coffee. 110mg of caffeine per can means you're getting a kick without blowing your heart valves and the modest size means you can easily put down a can in its entirety in a sitting, as well as it being convenient for travel. I wish this was cheaper or more readily available, I would drink this regularly if I could.

## Frequently Bought Together

- BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten
- BOSS Coffee by Suntory - Japanese Flash Brew Coffee with Milk, 8oz 12 Pack, Imported from Japan, Au Lait, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten
- BOSS Coffee by Suntory - Japanese Flash Brew Original Black Coffee, 8oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Keto Friendly, Vegan, No Sugar, No Dairy

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**Shop now:** [https://www.desertcart.tn/products/261470706-boss-coffee-by-suntory-rainbow-mountain-blend-japanese-flash-brew](https://www.desertcart.tn/products/261470706-boss-coffee-by-suntory-rainbow-mountain-blend-japanese-flash-brew)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-12*