Warm a little vegetable oil in a skillet over medium heat. Add 150 g onion and cook for about 5 minutes until thoroughly softened.
Add the chilli spice along with a splash of water to stop it scorching, then fry for 1 minute. Take the pan off the heat and strain away excess oil.
Whisk 225 g buckwheat flour and 0.3 g salt together in a large bowl. Gradually pour in water while beating thoroughly to make a smooth, runny batter without any lumps, then fold in the drained onions.
Heat a light film of vegetable oil in a wide frying pan over medium heat. Spoon in 2 tablespoons of batter per pancake and cook for 1 minute, then flip and cook the other side until done. Repeat with the remaining batter.
Use 80% of the weight, finely shredded and browned slowly with a pinch of asafoetida. Replicates the bulk and natural sweetness in gravies without allium.