Add the mayonnaise, onions, celery, dill, breadcrumbs, mustard, garlic, cayenne pepper, folding the mixture gently until combined.
Press into about 4-5 patties
Heat the oil in a large skillet over medium heat.
Cook the salmon patties for 10 minutes, turning them over very gently and cooking them for another 10 minutes until both sides are lightly browned and cooked through.
Place the burger on a bun and add your favourite toppings
Notes
You can also bake these in the oven for 13-15 minutes at 425°.