Carefully pick through crab meat to remove any shell pieces.
Working very gently with your hands, gently combine all ingredients, except olive oil and butter, in a large bowl and gently mix.
Be very careful not to break up the lumps of crabmeat.
Gently shape into 8 - 10 patties, gently place on wax paper, cover with another piece of wax paper and refrigerate for 1 hour.
This allows the crab cakes to hold together better when cooking.
Heat olive oil and butter in a frying pan to medium/high heat
Brown crab cakes, one or two at a time, on both sides until lightly browned
Drain on paper towels