Substitutions
Pure starch washed from cassava root and dried. It thickens to a clear, glossy, faintly elastic set and is the standard thickener for fruit pies that need to look bright.
What it does in a recipe: Glossy, freeze-stable thickening with a clean finish and a hint of sweetness. Pick the swap that covers that job — the ratios below are written so you can act on them without doing any arithmetic.
Also called: Tapioca flour, Cassava starch
Quick answer
Arrowroot starch
1 tbsp tapioca starch = 1 tbsp arrowroot starchAll substitutes, best first
1 tbsp tapioca starch = 1 tbsp arrowroot starchThe closest match available — another pure root starch that sets clear at a low temperature and, like tapioca, survives freezing and thawing without separating.
Trade-offA little less glossy and without tapioca's slight chew. Both go slimy in dairy, so neither belongs in a cream sauce.
1 tbsp tapioca starch = 1 tbsp cornstarchSimilar thickening power by volume, so the spoon measurement transfers directly, though cornstarch needs a higher temperature to set and gives a slightly cloudier result.
Trade-offWeeps water when frozen and thawed, which is exactly the problem tapioca was chosen to avoid in a make-ahead pie. It also loses power under acid and prolonged heat.
1 tbsp tapioca starch = 2 tbsp instant tapioca granulesThe same cassava starch in a granulated pre-gelatinised form, so it thickens the same way once hydrated, just more slowly and less efficiently by volume.
MethodLet it sit in the fruit filling for 15 minutes before baking so the granules soften, or grind it fine in a spice grinder first.
Trade-offLeaves visible soft beads in the filling unless it is ground, which some cooks like in a pie and nobody wants in a sauce.
1 tbsp tapioca starch = 1 tbsp potato starchAnother clear-setting root starch with fast, low-temperature thickening, so it fills the same visual role in a glaze or a fruit sauce.
MethodAdd it off the boil and do not cook it further once thickened.
Trade-offConsiderably less heat-stable — sustained boiling breaks it and the liquid thins straight back out.
Tapioca is the thickener of choice for anything you plan to freeze. Where cornstarch weeps and flour turns spongy on thawing, tapioca comes back close to how it went in.
At a glance
| Category | Thickeners |
|---|---|
| Job in a recipe | Glossy, freeze-stable thickening with a clean finish and a hint of sweetness |
| Suits | Vegan, Vegetarian, Gluten-free, Dairy-free, Egg-free, Nut-free, Soy-free |
| Swaps available for | Dairy-freeEgg-freeGluten-freeNut-freeSoy-freeVeganVegetarian |
| Number of substitutes | 4 |
Related
Cooking around an allergy? Diet tags here describe the ingredient itself, not any particular brand. Processed products change formulation without notice and shared production lines are common, so read the label on everything you use. A severe allergy is a medical matter — confirm with the manufacturer or your clinician rather than relying on a substitution chart.