A thick fillet of fresh halibut is dredged in a masa harina, then pan-seared and served with a to-die-for pesto-ish sauce of roasted green chiles and pumpkin seeds spiked with cilantro and fresh-squeezed lime juice. The toasty tortilla flavor and the taste-plosion of the mild but flavorful salsa verde go wonderfully on a steaming mound of rice sauteed with summer vegetables.