How this style works
Protein powder makes a base lean, and lean bases are exactly the ones that shatter into powder on the first spin. That is not a failure — a rock-hard, low-fat block has nothing for the blade to emulsify — but it does mean a protein pint needs help built in. The ratio these recipes work from is roughly one cup of liquid to one scoop of protein, plus a couple tablespoons of sugar and a spoon of stabilizer per pint.
Each of those three parts does a specific job. The liquid carries the flavor. The sugar lowers the freezing point so the mixture never sets bone-hard. And the stabilizer — a spoon of instant pudding mix, a little cream cheese, or a pinch of xanthan gum — binds the free water that would otherwise crystallize into coarse ice. Skip the stabilizer and you get a pint that tastes right and feels gritty.
Spin these on Ice Cream or Lite Ice Cream after a full 24-hour flat freeze, and plan on the re-spin. Low-fat and protein bases come out crumbly more often than any other style: add a tablespoon of milk, run the Re-spin program, and the shards from the first pass bind into soft serve.
