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Root & Tuber Flours

Root & Tuber Flours

This is the grain-free corner of the library. Root and tuber flours — cassava, potato, sweet potato, plantain and tigernut — are made from whole roots and starchy fruit rather than anything resembling a cereal. For coeliacs who also avoid grains, or anyone chasing soft wraps and tender bakes, this family quietly solves problems the grain shelf cannot.

What root and tuber flours do in gluten-free baking

Their gift is moisture and pliability. These flours hold water generously, which keeps bakes soft for days and — in cassava’s case — produces tortillas and wraps that actually fold instead of cracking. Cassava is the closest single-flour substitute for wheat in this whole library, which is why grain-free recipes lean on it so heavily.

They are whole-food flours, not extracted starches, so they bring fibre, flavour and colour along with the starch. That distinction matters: potato flour and potato starch are different ingredients with different jobs, and swapping one for the other is the classic way to ruin a loaf.

The family at a glance

Flour Texture & flavour Best for Role Watch out for
Cassava Soft, fine, neutral Tortillas, wraps, cookies, grain-free baking Base Not the same as tapioca starch
Potato flour Heavy, distinctly potato Yeast breads, moisture retention Booster (small doses) Never confuse with potato starch
Sweet potato Soft, sweet, golden or purple Cakes, pancakes, cookies Booster Different again from sweet potato starch
Plantain Starchy, neutral when green Pancakes, tortillas, flatbreads Base / booster Not interchangeable with banana flour
Tigernut Sweet, nutty, slightly coarse Cookies, pancakes, no-bake bases Booster A tuber, not a nut — despite the name

Meet the flours

  • Cassava Flour — the whole-root flour (also sold as yuca or manioc flour) behind the best grain-free tortillas. The nearest thing to an all-purpose flour in this family.
  • Potato Flour — whole dried potato, ground. A spoonful keeps yeast breads moist and soft; a cupful makes wallpaper paste. Small doses.
  • Sweet Potato Flour — gentle sweetness, lovely colour and moisture for cakes, pancakes and specialty bakes.
  • Plantain Flour — made from green plantains, so it bakes starchy and neutral rather than fruity. A solid grain-free base for flatbreads.
  • Tigernut Flour — sweet, nutty-tasting and completely nut-free, because tigernut is a tuber. A favourite for cookies and anyone baking around a nut allergy.

Best for…

Bake Reach for
Tortillas & wraps Cassava, with plantain as backup
Muffins & cakes Sweet potato or tigernut for moisture and sweetness
Bread A small share of potato flour for softness that lasts
Cookies Tigernut or cassava
Pancakes Plantain or sweet potato

Building a blend from this family

  • Base: cassava, on its own for wraps or with rice flour for general baking.
  • Pair with: tigernut or sweet potato when a recipe wants natural sweetness instead of added sugar.
  • Starch: tapioca is the natural partner — same root as cassava, different job. The Pure Starches page untangles that pairing.
  • Binder: these flours hold moisture well, so go lighter on psyllium and xanthan than you would with a grain blend.

A note on coeliac safety

Roots and tubers grow nowhere near wheat fields, but their flours still pass through mills, dryers and packing lines that may handle gluten grains. Naturally gluten-free is the start of the conversation, not the end of it. Buy versions with an explicit gluten-free label — certified where you can get it — whenever one of these flours is a main ingredient in your baking, and skip bulk bins entirely: shared scoops make them unsafe for coeliacs, always.

One name worth flagging: tigernut flour is safe for nut allergies (it is a tuber), but the word “nut” on the pack confuses cafes and relatives alike — worth explaining when you share your bakes.

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