Among the embarrassment of riches available in the New World are the seemingly endless varieties of winter squash that can be cultivated here. Although the growing season here ended months ago and we're squarely in the middle of what is shaping up to be one of the snowiest winters on record, yesterday I retrieved a Thelma Sanders Sweet Potato squash from the dark, cool recesses of my garage and baked it. Its warmth, naturally sweet taste and aroma certainly took the chill off the season. It's only February. And winter can last up until the end of April in a bad year. Fortunately, I have a few more squash to see me through until the Spring thaw.