Scoop KitchenCurdled, separated or watery
Acid and some fresh fruits curdle milk, heavy bits sink while the tubpint freezes, and alcohol can stay liquid. Most separated tubspints still spin fine, and a Re-spin evens them out.
Updated 13 October 2026
Narrow it down
Answer what you know. The most likely cause moves to the top.
4 possible causes
Acidic fruit curdled the milk
Most likelyHow to tell: Lemon, lime, orange or berry juice went into a milk base, and there were small curds before freezing.
Why: Acid makes milk proteins clump together.
Fix this tubpint
- Spin it anyway. It usually comes out smooth. If it is grainy, Re-spin with 1 tbsp of milk.
Next time
- Mix fruit and dairy cold, add the juice last and stir quickly.
- Cream curdles less than milk, and a little sugar mixed in first helps too.
Fresh pineapple, kiwi or papaya with dairy
Most likelyHow to tell: The base went thin and bitter, or tasted odd, after fresh pineapple, kiwi, papaya, fig or ginger met the milk.
Why: These fruits contain enzymes that break down milk protein and make it bitter.
Fix this tubpint
- Taste it. If it is bitter, it is best as a sorbet-style treat with juice instead of milk.
Next time
- Use canned pineapple, or simmer the fresh fruit for 2 to 3 minutes and cool it first.
- Or make it a sorbet, like our pineapple whip and kiwi lime sorbet.
Ingredients settled while freezing
Most likelyHow to tell: An icy or watery layer at the bottom and a thick layer on top.
Why: Fruit purée, cocoa and protein powder sink before the tubpint freezes.
Fix this tubpint
- Spin, then Re-spin to even it out.
Next time
- Whisk or blend the base right before it goes into the freezer, and get it in quickly.
Alcohol stayed liquid
Most likelyHow to tell: A boozy tubpint with a wet, slushy layer.
Why: Alcohol does not freeze in a home freezer and pulls the tubpint’s freezing point down.
Fix this tubpint
- Spin, then freeze for 30 minutes before serving.
Next time
- Keep spirits to about 2 tbsp (30 ml) per 473 ml16 oz tubpint, or pour them into a hole in the frozen tubpint and run Mix-in.
Check your recipe
See how much fat, sugar and solids your base has, compared with what spins creamy, and exactly what to swap.
Open the recipe checkQuestions people ask
Why did my CREAMi base curdle?
Acidic fruit or juice met cold milk, or fresh pineapple or kiwi broke down the milk protein. It usually spins smooth anyway. Next time, add the juice last, cold, and use canned pineapple.
