Triple Pickle Smoked Salmon Butter Sandwich

Like many New Yorkers, I fell in love with focaccia sandwiches at Saltie, a small sandwich shop in Williamsburg, now closed. Saltie tucked ribbons of mortadella, piles of pickles, and smatterings of herbs into bubbly, golden brown squares of fresh focaccia. The bread is surprisingly sturdy, and a wide slice does a great job of containing small, crunchy sandwich toppings. This sandwich combines smoked salmon butter, pickled shallots, Turmeric-Pickled Cauliflowe