Seriously easy to make...
3 1/2 cups (800ml) water
1 cup (200g) cornmeal
2 cups (250g) buckwheat flour
3 teaspoons salt
Combine all the ingredients in large bowl & whisk well - add more water as needed 1/8 cup at a time
(batter should be thin- more like cake batter than muffin batter.)
Heat a large non-stick frying pan or skillet over med-low heat.
Ladle in one scoop of batter like you would pancakes.
Take the backside of a spoon & smooth out the batter to the outer sides to get the tortilla as thin as you can & also even out the shape (this should make it more uniform in size & shape & help increase the size).
Allow to cook until browned - flip & brown the other side - be patient & watch closely.