Stir together first 6 ingredients in a large bowl. Divide mixture into 8 balls.
Flatten each ball into a 3-inch patty. Divide smoked salmon into 4 pieces, and place in center of 4 patties. Place remaining patties over salmon, pressing edges to seal; coat cakes in breadcrumbs.
Heat oil in a large nonstick skillet over medium-high heat; add cakes, and cook, in batches, 3 to 4 minutes on each side or until golden. Drain on paper towels. Serve immediately with Spicy Avocado Tartar Sauce. Garnish with fresh cilantro sprigs, if desired.
Fantastic. Loved it. Didn't change the recipe. The Spicy Avocado tartar sauce is so delicious. Can be used for many other recipes, i.e. appetizers, or for tacos. This recipe will be a regular repeat.