potatoes, washed, peeled, small diced • tempeh/soy bean cake (around 300 gr), small diced • vegetable oil for deep frying potatoes and tempeh • vegetable oil • garlic, thinly sliced • shallots, thinly sliced • green chili peppers, diagonally sliced • red chili peppers, diagonally sliced • red Thai bird eye chili peppers (optional according to taste) • oyster sauce • sweet soy sauce • salt or to taste •