The soup's bright yellow colour comes from palm oil whisked with 'limestone' — a natural potash called kanwa — until the oil emulsifies into a thick, creamy sauce.
Cocoyam and unripe plantain are boiled until soft, then pounded into a smooth, stretchy grey paste. It's mounded in a bowl of vivid yellow soup — palm oil, limestone water, spices and meat, tripe or fish — and eaten by scooping with the fingers.