by Jeff Grossman » Wed Mar 14, 2018 10:45 pm
And I am in the minutiae of technique for my pan-roasted sesame-crusted wild salmon.
One of the delights of this prep is crisping up the salmon skin. The fish, of course, starts in the pan presentation side down, so I have a chance to heavily salt the skin as it is facing up. The final step of the cook puts the skin side down onto the hot pan (and, typically, into a 1/4" of hot salmon fat that has 'bled' out from under the skin earlier). After 3.5 minutes, it comes out the pan. The skin is crispy-salty, reminiscent of cooked bacon.
A typical piece of salmon cut from the middle of the slab is always thicker on one end; I believe that is the upper part of the fish. The skin behind this piece is dark while the thinner section has light silver or even white skin. When I cut up the 1# chunk I buy at the store, I do it by eye so as to give each piece the same mass; hence, the light-skinned piece is a little bigger than the dark-skinned piece because it is a little thinner. Pumpkin gets the thinner piece because it will be cooked-through more completely than the chunkier piece.
I have noticed that the two pieces of skin do not cook the same. Pumpkin's piece typically comes out as a perfect, crispy, browned sheet while mine is often crumpled, folded over, and of inconsistent chew. I have recently started to ask why this should be so.
Hypotheses:
1. The composition of meat and fat are slightly different between the top of the fish and the bottom of the fish hence they react differently in the pan.
2. Heat is conducted slightly differently between the left and right sides of the pan. Every pan has hot spots, even the flame jetting from the hob has hot spots, and I always cook the thinner piece on the left.
3. The larger area of the thinner piece has a better chance to hold the skin taut while it cooks, while the smaller (but taller) piece does not grip the skin well enough while it responds to the heat.
Re the first hypothesis, I have asked my fishmonger. But I was talking to the son, not the father; he says he will relay the question.
Re the second hypothesis, I switched where I cook the pieces tonight, putting the thinner piece on the right this time. While one data point isn't everything, I note that the skin on the chunky piece came out perfectly while the skin on the thinner piece was OK but showed some warpage. (Clearly, this experiment deserves to be re-tried.)
Re the third hypothesis, well, I can't think of any way around it so I'd just have to live with it. As I have been.