Chilean sea bass is our favorite fish, therefore our filets are pretty big. From 1.25 pounds you could easily get 4 filets instead of 3. Try to cut/use filets that are around the same size so that they cook evenly.
Beurre Blanc sauce usually has a smooth consistency. Chef Antoine has added minced shallots as we love the flavor they add. You can leave them out if you prefer or simply run the sauce through a fine mesh sieve to remove any extra bits and pieces.