I think I've perfected this recipe. Thought I'd take some pictures and share them.
Oatcakes
Ingredients
250 grams rolled oats (2 cups plus a little)
20 grams bacon fat (1-1/2 tablespoons)
some salt (I use 1/2 teaspoon)
250 ml boiling water (about a cup)
Put the oats, salt and fat into a food processor and run it till the oats are ground into a fine meal
Add the boiling water and process into a heavy dough. You can add more water or more oats. You want a fairly soft, but not super wet/sticky dough.
Divide the dough in half and roll each half out to fit the base of a 9" tart pan.
Put the bases into the tart pans. Mark each circle into even wedges, and cut the wedges.
(You can just roll the dough out and cut into circles or squares, too, obviously--you want it to be about 3/16" or 50mm thick.)
Bake at 300F/150C/Gasmark 2 (slow oven) till crisp and dry, about an hour--maybe longer. You turn a wedge over and tap the underside and if it's the slightest bit damp or not-crisp, keep baking. They shrink quite a bit.
Serve warm from the oven or cold, with butter and/or cheese. Or bacon. Or honey. Or plain.