Wheat starch substitutes

The best single swap and what many Vietnamese translucent dumplings use anyway. It forms a hot-water dough that behaves almost identically to knead and pleat. Steamed, the wrapper is glossier, distinctly chewier and slightly sticky, where wheat starch gives a shorter, more tender, faintly snappy bite. Cooled dumplings made with tapioca get noticeably rubbery, so serve them hot.

Best for

banh bot loc, har gow and crystal dumplings, translucent rice rolls, chewy wrappers

Tapioca dough is stickier to handle. Oil your hands and the work surface rather than dusting with more starch, which makes the wrapper cloudy.

The closest match to real wheat starch and worth the extra thirty seconds. The cornstarch interrupts the long stretchy chew of tapioca and gives a shorter, more tender bite very like a proper crystal dumpling. The wrapper is a touch less transparent than wheat starch, closer to frosted glass than clear glass.

Best for

har gow, banh bot loc, anything where you want tender rather than chewy

Mix the two dry powders thoroughly before adding boiling water, or you get lumps of pure cornstarch that stay raw and grainy.

Makes a very clear, very soft, silky wrapper that is genuinely lovely to eat and genuinely difficult to work with. It tears at the pleats and it slumps in the steamer, and it goes claggy if the water was even slightly off the boil. Flavour is neutral and clean, closest of all to wheat starch.

Best for

flat translucent dumplings you do not need to pleat, banh bot loc wrapped in banana leaf, where the leaf supports it, small batches

Use water at a full rolling boil and mix immediately. Potato starch is much less forgiving about temperature than tapioca or wheat starch.

Cornstarch on its own makes a dough that crumbles and cracks and cannot be pleated, so do not use it alone for a wrapper. Blended into tapioca it earns its place, tightening the texture and cutting the stretch. On its own it is fine wherever the wheat starch was only thickening a sauce or lightening a batter.

Best for

blending into tapioca dough, thickening sauces where wheat starch was listed, crisp fried coatings

If your recipe uses wheat starch for a fried coating rather than a wrapper, cornstarch alone at 1:1 is a fine swap and fries slightly crisper.

This is the honest compromise rather than a substitute, because rice flour will not go transparent. The wrapper comes out opaque white and soft with a pleasant slightly sandy bite, which is a good dumpling but a visibly different dish. Use it when you want something to eat tonight and do not need to see the filling through the skin.

Best for

opaque steamed dumplings, banh it and similar soft wrappers, when tapioca alone is too chewy for you

Use plain rice flour, not glutinous or sweet rice flour, which behaves completely differently and gives a mochi-like wrapper.

Worth stating plainly because it is the mistake almost everyone makes first. Wheat starch is wheat flour with the gluten washed out, so replacing it with flour puts the gluten straight back in. You get an opaque, elastic, bready dough that steams into something like a thick pale noodle. It is edible, it is not a translucent dumpling, and no amount of extra water or kneading will fix it.

Best for

nothing in this category

If tapioca, potato and corn starch are all unavailable, make a different dumpling with a flour dough on purpose rather than trying to force a crystal wrapper.