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Proffee (Protein Cold Brew) — The Recipe and the Real Math

The BYOB Team5 min1 drink$1.40/drink200 cal/drink

Ingredients & steps

Standard

Ingredients

  • 1 cup cold brew concentrate (homemade or store-bought)
  • 1 scoop (about 1oz/30g) protein powder, vanilla or chocolate
  • 4oz milk or milk alternative of choice
  • Ice, as needed
  • Optional: 1/2 tsp vanilla extract or a splash of sugar-free syrup for extra flavor

Steps

  1. 1.Add the protein powder to a shaker bottle or blender with the milk first — mixing powder into liquid before adding coffee prevents clumping.
  2. 2.Shake or blend for 15-20 seconds until fully smooth, no powder streaks left.
  3. 3.Fill a glass with ice, pour in the cold brew concentrate, then pour the protein-milk mixture over it.
  4. 4.Stir once to combine layers, or leave it layered for a few seconds if you want the visual before mixing. Add vanilla extract or syrup if using.

Swap the milk

This recipe is written with Kirkland Signature Organic A2 Whole Milk (4oz). Pick a different milk to see the cost and calories update below.

Milk: Kirkland Signature Organic A2 Whole Milk

Cost per drink

$1.40

Calories per drink

200

Not medical or nutrition advice. Calorie figures on this page are estimates based on typical ingredient values, not a lab analysis of your exact batch — they'll shift with the brand of milk, syrup, or protein powder you actually use. "Clean-ingredient" and "sugar-free" describe what's in the recipe, not a health claim. If you're managing diabetes, a caffeine sensitivity, pregnancy, or another condition, check with a doctor or dietitian before making a recipe part of your routine. Read the full disclaimer.

Proffee is exactly what it sounds like: protein powder blended into cold brew, usually with a splash of milk. It’s trending for a reason — it’s an actual meal-adjacent drink instead of just caffeine, and it’s one of the cheapest things on this site to make at home, since none of it requires an espresso machine or specialty gear.

What Proffee Actually Is

Strip away the trend name and it’s three things: cold brew concentrate, a scoop of protein powder, and milk (or a milk alternative), shaken or blended together over ice. No cooking, no steaming, no equipment beyond a shaker bottle or a blender you probably already own.

The Recipe

  1. Add your protein powder to a shaker bottle or blender along with the milk first — mixing the powder into liquid before the coffee goes in is the single biggest trick to avoiding clumps.
  2. Shake or blend for 15-20 seconds until completely smooth.
  3. Fill a glass with ice, pour in 1 cup of cold brew concentrate, then pour the protein-milk mixture over it.
  4. Stir to combine, or let it sit layered for a moment if you want the visual before mixing. Add vanilla extract or a splash of syrup if you want more flavor — our Sugar-Free Vanilla Syrup pairs well here if you’re also watching sugar.

No cold brew concentrate on hand? Our Cold Brew Concentrate recipe walks through the full method (roughly 1 part grounds to 4 parts water, steeped 12-24 hours and strained twice) for pennies a cup.

Homemade vs. Bottled Protein Coffee vs. Café Add-On
Homemade proffee$1.40
Bottled ready-to-drink protein coffee (single can)$4.99
Café protein latte / protein add-on~$6.75–$7.25

Savings per drink: $3.60–$5.85, depending what you’d otherwise buy.

Assumptions: 1 scoop of protein powder from a typical $30/2lb tub (about 32 scoops per tub, ~$0.94/scoop, rounded down slightly for bulk-buy pricing), homemade cold brew concentrate at grocery bean pricing, dairy or milk-alternative splash. Bottled and café prices are current market averages and will vary by brand and city — the gap holds either way.

At 5 proffees a week instead of the bottled option, that’s roughly $936/year saved; instead of the café add-on, closer to $1,400/year.

Getting the Ratio and Flavor Right

  • Mix powder into liquid, not liquid into powder — this is the #1 fix for clumpy proffee. Powder first, into milk, shaken smooth, then combined with coffee.
  • Vanilla or chocolate protein blends best — unflavored works but tastes flatter; a mild vanilla or chocolate whey or plant-based blend covers the coffee’s bitterness naturally.
  • Adjust the coffee-to-milk ratio to taste — more cold brew for a stronger, more bitter drink; more milk for something closer to a protein shake with coffee flavor.
  • Watch for protein powders that don’t mix well cold — some plant-based proteins clump more than dairy-based whey or casein. A blender handles stubborn powders better than a shaker bottle.

Recipe Card Summary

Proffee (Protein Cold Brew)

  • 1 cup cold brew concentrate + 1 scoop protein powder + 4oz milk, over ice
  • Prep time: 5 minutes · Total: 5 minutes
  • Cost: ~$1.40/drink vs. $4.99 bottled or $6.75+ café equivalent

FAQ

Does the protein powder curdle in cold coffee?

Not if you mix it into the milk first, not directly into the acidic cold brew. Powder-then-milk-then-coffee, in that order, avoids nearly all clumping and curdling issues.

What’s the best protein powder for proffee?

Whey or casein blends mix most smoothly cold. Plant-based proteins work too but can be grittier — blending instead of shaking usually fixes that.

Can I make this hot instead of iced?

Cold brew is the standard base because protein powder can denature and clump more in very hot liquid — if you want a hot version, use warm (not boiling) coffee and expect a slightly different texture.

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