Cocoa Powder in Coffee: How to Make a Homemade Mocha (Hot or Iced)

By Grevista Editorial Team

·

Published

Cream mug of mocha with cocoa dusting beside a bowl of cocoa powder, a small coffee pot and coffee beans

Back to the Cocoa Powder Guide

Yes, you can put cocoa powder in coffee. Stir 1 tablespoon (6 g) of unsweetened cocoa powder and 1 to 2 teaspoons of sugar into 2 tablespoons of hot water until smooth, then pour in 8 ounces (240 ml) of hot coffee for a simple homemade mocha. Add steamed milk for a café-style cup.

No syrup bottle, no mocha machine, just the tin of cocoa you already keep for baking. The only trick is dissolving it properly, which is why the paste step below matters more than the ratio.

Key facts: cocoa powder in coffee

WhatValueUnitSource and date
Cocoa powder per 8 oz cup1 tbsp (6)gServing weight on the Grevista package label, photographed September 22, 2026
Calories from the cocoa20kcalGrevista package label, September 22, 2026
Sugar from the cocoa0gGrevista package label, September 22, 2026
Caffeine from the cocoaabout 14mgUSDA FoodData Central FDC 169593 (230 mg per 100 g) × 6 g, checked September 15, 2026
Caffeine in 8 oz of coffee80–100mgU.S. FDA, “Spilling the Beans: How Much Caffeine Is Too Much?”, checked September 15, 2026
Caffeine in the mocha, totalabout 94–114mgArithmetic from the two rows above

How do you make a mocha with cocoa powder?

Makes: 1 cup · Active: 3 minutes

Ingredients

  • 1 tablespoon (6 g) unsweetened cocoa powder
  • 1 to 2 teaspoons sugar, or 1 tablespoon maple syrup
  • 2 tablespoons hot water
  • 8 ounces (240 ml) hot brewed coffee
  • Steamed or warm milk, to taste (optional)

Instructions

  1. Make the paste. Stir the cocoa, sugar and hot water in the bottom of your mug until it is smooth and glossy, with no dry specks left.
  2. Add the coffee. Pour the hot coffee in slowly while stirring, so the paste melts into it.
  3. Finish. Stir in warm milk if you like, taste, and add a little more sweetener if the cocoa tastes sharp.
Hot black coffee being poured from a glass pot into a mug with chocolate paste, beside bowls of cocoa and sugar
Illustration: make the cocoa paste first, then pour the hot coffee over it.

Why does cocoa clump in coffee, and how do you stop it?

Cocoa powder is fine and dry, and coffee is hot but not very thick, so dry spoonfuls sit on the surface and form clumps that never dissolve. Stirring the cocoa with sugar and a small amount of hot water first wets every particle, and the paste then mixes into the cup evenly. The same trick is why a hot chocolate comes out smooth, as in our guide to using cocoa powder.

How can you make it iced or richer?

If you want…TryKeep in mind
An iced mochaMake the paste with hot water, stir in cold coffee, then pour over iceSweeten the paste, since sugar dissolves best while it is warm
A café-style latte½ cup coffee, ¾ cup steamed milk, same pasteLess coffee means less caffeine per cup
A sweeter, creamier cupUse hot cocoa mix in place of cocoa and sugar, about 2 tablespoonsA mix is mostly sugar, as in sweetened cocoa powder
A thick, spoonable mochaDouble the cocoa paste and use half the coffeeCloser to a dessert than a daily cup

Looking for a richer coffee with a story?

If you like the idea of chocolate in your cup, the Vietnamese way goes further: a cap of sweet whipped egg yolk in egg coffee, or a salted cream cap in salt coffee. Both start from the same idea as a mocha, a strong coffee with something sweet and creamy on top.

Want to make it with our cocoa?

A mocha is only as good as the cocoa in it. Ours is single-origin Vietnamese Trinitario with nothing else in it, unsweetened and non-alkalized, and its third-party heavy-metal reports are public on Lab Results & Awards. Check price: 200 g box

Frequently asked questions

Can you put cocoa powder in coffee?

Yes. Stir 1 tablespoon (6 g) of unsweetened cocoa powder and 1 to 2 teaspoons of sugar into 2 tablespoons of hot water until smooth, then add 8 ounces (240 ml) of hot coffee. That is a simple homemade mocha.

Does cocoa powder dissolve in coffee?

Not on its own. Dry cocoa floats and clumps on the surface, so make a paste with a little hot water first, or whisk it with the coffee in a small jar before pouring.

How much cocoa powder should I put in a cup of coffee?

Start with 1 teaspoon for a hint of chocolate and go up to 1 tablespoon (6 g) per 8-ounce cup for a full mocha. Unsweetened cocoa is bitter, so add sweetener as you taste.

Does cocoa powder add caffeine to coffee?

A little. One tablespoon of cocoa powder carries about 14 mg of caffeine (USDA data), on top of the 80 to 100 mg in an 8-ounce cup of coffee, so a mocha made this way lands at roughly 94 to 114 mg.

Can I use hot cocoa mix instead of cocoa powder in coffee?

Yes, for a sweeter cup, but skip the extra sugar. A mix is mostly sugar by weight (65.55 g per 100 g in USDA data), so use about 2 tablespoons and taste before adding more.

Keep reading

Commercial relationship: Grevista distributes this cocoa and earns revenue from sales on Amazon. See our Affiliate & Commercial Disclosure.

Sources

Written by the Grevista Editorial Team. Last updated October 10, 2026. How we check facts: Editorial Policy.

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