Crispy fennel cakes with smoked salmon

GRATE fennel with a box grater or in a food processor. It should measure about 2 cups. Combine with panko, parmesan, garlic, egg and salt in a bowl. Season with fresh pepper. Divide fennel mixture into 4 mounds. HEAT a large non-stick frying pan over medium-high. Add oil, then mounds of fennel mixture. Press down with a spatula to form patties. Pan-fry until golden, about 2 min per side. TRANSFER cakes to centre of 4 appetizer plates. Dollop sour cream over cakes and top each with a couple of smoked salmon slices, fennel fronds and radish slices. Serve at room temperature.