Use fresh corn for best flavor, or frozen corn if necessary. To achieve an extra smooth sauce, blend half of the corn mixture before combining. Fresh thyme adds a delicate herbal note but can be substituted with dried thyme. For a richer flavor, swap milk with half-and-half or all heavy cream. Keep stirring gently while simmering to avoid burning. Variations include adding cayenne pepper for spice, cheese for richness, or making it vegan by substituting dairy ingredients.