I have a recipe for okonomiyaki from the book Cooking with Soy by Yoshiko Takeuchi
It suggests using ground flaxseed as a substitute for egg. I find ground and beaten flaxseed an effective replacement for egg in baking. I like to whip it with soymilk, but this recipe uses water.
The recipe incorporates okara, which gives it a more substantial, less dense texture, but might encourage it to fall apart more easily. Omit the okara if you don't have any.
Here is the recipe, slightly simplified
makes 4 pancakes
- 30g ground flaxseed1
- 40g rice flour2
- 80g potato flour2
- 100g finely chopped cabbage
- 100g okara3 (optional)
- neutral oil
- Put the ground flaxseed in a blender with 90ml water and process until creamy (if you don't have a blender, you can whisk it), then mix in 200ml water and transfer to a bowl
- Whisk all the other ingredients (except cabbage) into the mixture. You can add any extra flavourings you like. Stir in the cabbage
- Heat the oil in a frying pan on medium heat and when hot add the pancake mixture. When possible, turn it over and cook the other side.
1 You can grind flaxseeds in a spice grinder if you can't get ground flaxseed. It is very tedious to grind them without one though.
2 You can use wheat flour instead of these. Other flours such as buckwheat would probably also work.
3 Okara is the solid byproduct of making soymilk. It is bland in flavour and has a nice, crumbly-soft texture. In my country (the UK), as far as I know okara cannot be purchased anywhere. You can make your own okara from dried soybeans if you have a blender and muslin/cheesecloth/tofu-making cloth as follows:
- Wash 1/2 cup soybeans and soak in 1 cup water for at least 8 hours (I aim for 20 hours in a cool climate)
- Drain the soybeans and grind them very well in a blender with 2 cups water.
- Transfer the mixture to a pan and heat until it boils, stirring constantly. Turn the heat down and cook, stirring, for 10 more minutes. Cooking improves the taste of the soymilk.
- Strain the mixture through muslin. When cool, squeeze as much soymilk out of the cloth as possible. The solid part retained in the cloth is okara.