As I've mentioned several times, I now use just water. You must control the heat to make them cook properly whether thick or thin. Lower heat for thick, medium heat for thin.
Here's the mix ingredients:
water
oil
baking powder
salt
D-ribose powder or a bit of powdered sugar.
I generally use a lot of oil - grapeseed and plenty of salt. The ribose/sugar makes them brown nicely.
Now, if you put the water in the bowl first, add the salt, baking powder, oil and ribose and mix it up, you can then add the flour until the mixture is the right thickness to begin to experiment. If you start experimenting with a thin batter, you can always add a bit more flour.
Use an iron skillet that is WELL oiled. I use duck fat and replenish it constantly through the cooking process as it is absorbed by the cakes. If the heat is low to medium and the pan is good and hot, but not smoking, then a spoonful of batter should cook about two minutes until bubbles show through and the first side is nicely browned. I let them get pretty dark because then they are crispy. Then, turn over - making sure you still have a good fat layer in the pan - and let the other side cook to the desired darkness.
The color I like is about the color of an oatmeal cookie - dark brown. They can be lighter, but if so, you need to drop the heat and cook them slower.
If the batter is thin and the fat is generous, they will be crispy and lacy even. You can experiment with this to get them the way you like them.
As for the proportions, about 2 cups or more of water per cup of flour. About 1/2 tsp salt, baking powder and ribose/sugar per cup of flour. About 1/3 cup of oil per 2 cups of water. Those are just general approximations because I never measure anything when I cook but should be good enough to get your experiment started.
It really does seem to work better to start with the liquid first - water and oil - and add the other ingredients to that, gradually adding the flour until you get a thin batter and then add more flour if and as needed.
Having the pan HOT, but not smoking, before you put the first spoonful of batter on the griddle is also important.
Having a good fat on the pan is also important. Like I said, I use duck fat. I would recommend lard or bacon fat or grapeseed oil for cooking.
If you want to use the cakes for pizzas, make them with thin batter and make them small. Then, line them all up on a baking sheet or pizza stone and add the sauce and toppings (sans cheese). Then slip under the broiler for a few minutes. I drizzle them with a mix of balsamic vinegar and olive oil as a substitute for cheese.
If you want breakfast sweet bread, just make them plain and crispy, (which means a good coating of fat in the pan) maybe add a little xylitol to the mix. Make them crispy with plenty of fat for cooking. Then, serve with xylitol and cinnamon sprinkled on top. This is also a good, quick snack and satisfies the sweet tooth.
With the basic recipe, you can vary it in all kinds of ways. Add chopped herbs and onions to make savory breads for dinner.
Note: the d-ribose/powdered sugar is in there for browning purposes. You use the ribose/powdered sugar even if making savory breads. It "conditions" the buckwheat and does not add sweetness.
The first thing I do when I go into the kitchen every morning - or whoever goes in there first does it - is make the buckwheat batter and start the pan heating. By the time other people are up, there is usually a big platter of the cakes made.
We make them in a special pan that cooks four of them exactly the same size, but that's not essential. Any good iron skillet or griddle will do. The size is about that of a hamburger bun in diameter. (You can use them for sandwiches.)
If you want the surface softer or less crispy, just have the pan lightly oiled.
It's not rocket science, but it does take some experimentation to get everything exactly right for your own tastes. Like I said, I don't use the milks anymore, just water and d-ribose. If you use almond milk or rice milk, you don't need the d-ribose.
My earlier recipe was for a bit thicker batter, and it did take longer to cook at lower heat. Now, we turn them out fast and thin and crispy most of the time.
I think we must make over a hundred of them per day for 13 people to have breakfast breads, lunch sandwiches, dinner breads with soup, and snacks in between. The bowl of batter sits beside the stove with the pan at the ready all day for another batch to be made whenever anyone wants one or two. It only gets washed up and put away at night.