Add all of the patty ingredients. Make it into 4 same-sized dough, then form it into patty shape. Set aside.
For the sauce, mix all of the sauce ingredients into a bowl. Add a pinch of salt.
Pour oil in a pan and heat with medium-heat. Cook for 4-5 minutes until each side is cooked.
Grill the buns above a pan.
Stack the ingredients like so: bun at the bottom, patty—spread the sauce onto it, add cucumber, add onion, add cilantro, and finish with another bun on top.