MEXICAN STREET-CORN PALETA (CORN, SOUR CREAM AND LIME POPSICLE)

Steps:

• Place the milk, 2 1/2 cups corn kernels, cobs, serrano chile, 1 teaspoon kosher salt and sugar in a stockpot. (If your corn is very sweet, reduce the sugar slightly.) Place over medium heat, stirring the bottom with a spatula. Bring to a simmer, and reduce the heat to maintain it; do not boil. Cook, stirring occasionally, until the corn is mostly tender, about 15 minutes from when it comes to a simmer.
• Let cool for 10 minutes, and remove the corn cobs and serrano chile and reserve. Working in batches if necessary, blend the milk mixture in a blender until smooth. Blend in sour cream, lime zest, lime juice and more salt or sugar to taste. Transfer milk mixture to a bowl, add the corn cobs (and serrano, if you like) and chill at least four hours, preferably overnight.
• Heat butter in a large sauté pan over medium-high heat until foamy. Add the remaining corn and a few pinches of salt. Sauté until the corn is nicely browned, 3 to 5 minutes. If the bottom of the pan is browning, stir in some water until it fully evaporates. Transfer to a bowl, chill and reserve.
• Remove the cobs and serrano again and discard. Divide the sautéed corn among your Popsicle molds (about 1 tablespoon each if using 3-ounce molds). Divide the milk mixture into the molds. Give each a gentle stir to distribute the corn. Freeze for 50 minutes, or until just hard enough to stand the Popsicle sticks up, insert sticks and freeze until firm, at least 4 hours more. To unmold, dip the molds for a moment in hot water, and remove the paletas. Sprinkle with chile powder, if desired.