Creamy kale Caesar salad and Ghanaian red red stew are among the new dishes clients were invited to try at a Toronto shelter this fall.

It's a step toward meeting the city's Coolfood Pledge to cut greenhouse gas emissions from its food purchases by 25 per cent by 2030 relative to 2019 levels.

The United Nations estimates about a third of human-caused greenhouse gases is linked to food. (The rest is mostly from burning fossil fuels.) 

So as part of their plans to fight climate change, cities around…