Braised beef tinga tostadas

Blend the half can of tomatoes, two garlic cloves, a big spoonful of chipotles in adobo, a quarter onion, dried oregano and salt into a sauce.

Heat a squirt of oil with a bay leaf over medium heat, sizzling about 20 seconds; pour in the sauce and simmer about 5 minutes.

Add the braised beef and simmer, stirring, about 10 minutes.

Slice avocado, finely dice an onion, cut lime wedges.

Spread Greek yogurt or sour cream on each tostada; top with tinga, diced onion, avocado, crumbled cotija, a sprig of cilantro and a squeeze of lime.