Hi, interesting topic! What learning are you hoping the children take away from it as you my find it easier to link to recipes and foods through that xx
Possible ideas
Hot/tropical - recipes involving cacao, banana, mango, oranges, pineapple, spices such as curry, chilli,
cinnamon
Cold/arctic - icecream, sorbet, mint,
Wet/oceans/flood plains - seaweed, rice, soup, stew, smoothies,
Dry/arid/desert - crackers, biscuits, local recipes using hallumi and for- falafel,
Mountainous/high/hills - grapes, tea, grain amaranth,
Lowlands/flat - daffodils! maize - cornflakes, popcorn, sweetcorn recipes
If wanted you could also include foods that have been grown in space -
https://en.wikipedia.org/wiki/Plants...grown_in_space
Hope this helps a little xx