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I've been making oat milk and looking for recipes which can utilise the pulp which is left after making the oat milk. I tried cookies and pancakes but they end up wet and soft.

Is this because all of the starch is taken out of the oats when they're mixed with water? Is the leftover pulp mainly just fibre with only a little bit of starch?

If I made flour with the leftover pulp after it has been dried, should it have to be treated differently from regular oat flour?

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  • The pulp from making soy milk is called okara, and is suitable for savory stir fries or to bulk-out baking recipes. I'm not sure how much oat pulp varies from soy in texture and flavor, but it might be worth trying it in an okara recipe like this vegetable and okara stir fry.
    – Benjamin Kuykendall
    Jul 8, 2020 at 19:46
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    And before people complain that they're asking for recipes for an item -- back in the early days of this site, there was a specific exemption for asking about how to use something that would typically be considered waste. (many of those distinctions, such as restaurant mimicry seemed to have disappeared when it was split into separate pages for 'what's on topic' and 'what's not allowed')
    – Joe
    Jul 8, 2020 at 21:24

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Yes, most of the fat, starch and flavour of the oats ends up in the milk, so what you have left is mostly fibre. Dough or batter made from it won't gelatinize much if at all, so will not hold together when cooked like regular oat flour.

Sometimes I add the residue to baked goods (along with wheat flour) in small quantities. It seems to work OK in cakes and soda bread (where a soft texture is desirable), but I need more oil than usual to get a good taste.

I also make quick raw snack balls out of it. I grind 1 part of it with 1-2 parts nuts and/or seeds (usually almonds, walnuts, sunflower seeds) and then I either add dried fruits and/or sugar and sweet flavourings like vanilla, cinnamon, nutmeg, cardamom or dry ginger, OR I add salt, chilli powder and herbs for savoury snacks.

I have also successfully tried mixing it with oats (using about 1 part residue to 3 parts oats) for making oatmeal/porridge or flapjack. I add some desiccated coconut to these dishes to compensate for the lower fat content and blandness of the oat residue.

To be honest, I feel it's not much use as anything but a bulking agent since most of the nutrients and tastiness have been extracted.

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