Here are some ingredients for a a sheek kebab recipe. Which of these acts as the acid component of the marinade?
onion, lentil flour, green chilli, salt, garlic, ginger, herbs: fenugreek, fresh coriander, spices: cumin seed,coriander podwer, crushed chilli, chilli powder, garam masala(cinnamom, cloves, ginger, star anise, cumin, chilli, fennel, black pepper, bay leaves, sun. oil, nutmeg, cardamom).