Pissaladiere niçoise 2024 version
In traditional Niçoise pissaladière, onions are mixed with "Pissalat" sauce (from the Niçois Occitan peis salat, "salted fish"), a paste made by macerating sardines and/or anchovies in coarse salt. Today, given the difficulty of obtaining real Pissalat, it's replaced by anchovy fillets added to the pissaladière. That's what I'd do for this 2024 version of pissaladière.