Place half of salmon, sour cream, rind, juice, cardamom, and pepper in a food processor. Process until smooth. Transfer salmon mixture to a bowl.
Coarsely chop remaining salmon, and fold into salmon mixture. Gently fold in 1/4 cup chives. Cover and chill. Garnish with additional chopped chives, if desired.
How to Hot-Smoke a Salmon: Besides fresh fish at the seafood counter, keep an eye out for smoked salmon, either hot-smoked (kippered) or cold-smoked (lox). I use hot-smoked salmon in the winter for pizzas and other savory dishes. Lox is more delicate and doesn't hold up to cooking, but we serve it with breakfast toast and with appetizers in the afternoon.
Although commercially smoked fish is readily available, you can also prepare your own on the grill with wood chips available in small bags from most markets. I prefer alder wood if it is available. Use this smoked salmon in the recipes here, or add it to pasta, pizza, or a main-course salad. -KD