This is a delicious side dish,especiallly for summer when you can get corn fresh off the cob. But frozen corn makes it possible to have this just anytime. You will want to use young tender summer squash. Even winter squash will work if it is young and tender. Recipe is from Saveur magazine. Elena Areliano contributed the recipe and she uses a squash known as Mexican squash (calabaza mexicana). It is a round green summer squash.