The term was coined in 1988 by late Oxford physicist Nicholas Kurti and the French INRA chemist Hervé This.
Besides, international trade brings new foodstuffs including ingredients to existing cuisines and leads to changes.
In much of tropical Africa, however, cow's milk is rare and cannot be produced locally (owing to various diseases that affect livestock).
The continent's diverse demographic makeup is reflected in the many different eating and drinking habits, dishes, and preparation techniques of its manifold populations. Ingredients common to many cultures in the east and Southeast regions of the continent include rice, ginger, garlic, sesame seeds, chilies, dried onions, soy, and tofu.
For example, a Tropical diet may be based more on fruits and vegetables, while a polar diet might rely more on meat and fish.