Sugar-Free Peppermint Mocha Sauce

This is the sauce batch behind our Sugar-Free Peppermint Mocha — the same real unsweetened cocoa powder and pure peppermint extract our Standard sauce uses, with a monk fruit or allulose sweetener in place of the sugar.

The Sauce

Whisk the cocoa powder into the water and monk fruit or allulose sweetener before turning on the heat — cocoa clumps badly in hot liquid unless it’s already dispersed, same rule as every cocoa-based sauce on this site. Set over medium heat and simmer 4-5 minutes, whisking often so it doesn’t scorch — sugar-free sweeteners can take a little longer than sugar to fully dissolve, so don’t rush it. If you want more body, whisk in a small pinch of xanthan gum off the heat. Finish with a pinch of salt, 1/4 tsp pure peppermint extract, and 1/2 tsp vanilla extract, then let it cool completely.

Start with 1/4 tsp of peppermint extract, not more — same guidance as the Standard sauce. It’s far more concentrated than a peppermint syrup, and you can always add a bit more once it’s cooled and tasted, but not take it back out.

Store the finished sauce in a sealed jar in the fridge for up to 2 weeks. It makes roughly 12 drinks’ worth at 2 tbsp per serving.

This batch (12 servings)$3.33 total

Per 2 tbsp serving~$0.28

Assumptions: unsweetened cocoa powder at typical grocery pricing ($0.09-0.11/tbsp) and monk fruit/allulose sweetener at typical grocery pricing ($3/cup at bulk-bag pricing), plus pure peppermint extract at typical grocery pricing (a 1 fl oz bottle running about $5.49, yielding roughly 6 tsp — 1/4 tsp comes out to about $0.23).

Storage & Shelf Life

• Keeps about 2 weeks in a sealed jar in the fridge, same as the Standard sauce.
• Xanthan gum is optional but recommended if you’re used to store-bought sugar-free syrups’ thicker mouthfeel.
• Give it a stir before using — cocoa sauces can separate slightly in the fridge; that’s normal.

Sweetener Notes

• Monk fruit or allulose blends measure roughly cup-for-cup like sugar and behave most like it here.
• Stevia works but is far more concentrated — use a fraction of the amount and adjust to taste.

What to Make With This

2 tbsp of this sauce, stirred into hot espresso before adding milk, is the Sugar-Free Peppermint Mocha. If sugar content isn’t your main concern, the Peppermint Mocha Sauce (Standard) uses the same method with regular sugar, or the Cocoa-Maple-Peppermint Sauce behind our Clean-Ingredient tier swaps in real maple syrup instead.

Recipe Card Summary

Sugar-Free Peppermint Mocha Sauce

• 1 cup water, 3/4 cup monk fruit/allulose sweetener, 1/2 cup unsweetened cocoa powder, salt, peppermint extract, vanilla, optional xanthan gum
• Makes ~12 servings (2 tbsp each) · Prep: 5 min · Total: 15 min (mostly simmering + cooling)
• Cost: ~$3.33/batch, ~$0.28/serving

FAQ

Can I buy a sugar-free peppermint mocha syrup instead of making it?

Some chains carry a sugar-free version around the holidays, but this homemade version costs a fraction of the per-pump price and uses real cocoa powder and pure peppermint extract rather than a flavor blend.

Do I need to make this every time I want a latte?

No — make one batch and it covers about 12 drinks over two weeks. The Sugar-Free Peppermint Mocha recipe assumes you already have a jar on hand.

Why whisk the cocoa into cold water instead of adding it once the pan’s hot?

Cocoa powder clumps almost instantly in hot liquid unless it’s already fully dispersed. Whisking it in cold, then heating everything together, avoids that entirely — same reason every cocoa sauce on this site does it this way.