arrachera (flank steak) - 800 g (two pieces weighing a total of 800 g, well marbled)
salt - to taste (to season meat and sauce)
black pepper - watch the video to see (ground, for marinade)
allspice - watch the video to see (ground, for marinade)
dried oregano - watch the video to see (for marinade)
cumin - a pinch (a pinch, for marinade)
garlic cloves - 6 (two cloves for marinade, plus 3-4 cloves for sauce)
sweet orange juice - watch the video to see (equal parts sweet orange juice and lemon juice for marinade)
lemon juice - watch the video to see (equal parts with sweet orange juice for marinade, plus extra for sauce and garnish)
beer - watch the video to see (a splash for marinade and leftover for michelada)
soy sauce - watch the video to see (for marinade, adds flavor and tenderizes)
onion powder (no salt) - watch the video to see (for marinade)
paprika - watch the video to see (for marinade, adds color)
olive oil - watch the video to see (a splash for marinade and cooking sauce)
jalapeño peppers - 4 (4 peppers, cut into pieces for sauce)
small onion - 1 small (for sauce)
cilantro sprigs - watch the video to see (a few sprigs for sauce)
serrano peppers - watch the video to see (for grilling and serving)
corn tortillas - watch the video to see (freshly made, warm for serving)
chopped onion - watch the video to see (for serving on tacos)
cilantro - watch the video to see (chopped, for serving on tacos)