Chicken Soup with Chipotle Paste

A staple in Mexico, often garnished with diced raw onion, avocado, tomato, and a squeeze of lime. You can make the chipotle paste by buying canned chipotles in adobo (sold at almost all Latin markets and many supermarkets) and simply whizzing them in a blender. The results, however, are searingly, blindingly hot and not at all like what you get in restaurants in Mexico, where the paste is made from scratch.

Fortunately, making the paste from scratch takes all of 20 minutes, 10 of wh