How do you add richness to bisque?

To add richness to bisque, incorporate heavy cream or crème fraîche towards the end of cooking for a smooth, velvety texture. Additionally, using a homemade stock from roasted shells or bones enhances depth of flavor. A splash of sherry or brandy can also elevate the taste profile, providing complexity and warmth. Finally, finish with a drizzle of high-quality olive oil or a pat of butter for added richness.