TEMPURA ONION RINGS

Steps:

• In a large bowl of cold water, soak the onions for 10 to 15 minutes. Let drain on paper towels.
• Meanwhile, in a large, deep pot or skillet, heat 2 inches of oil over medium-high heat until it registers 360F on a deep-fry thermometer.
• Fill a large bowl halfway with ice. In a separate, medium bowl, whisk the flour, cornstarch, baking powder, and salt. Add the 1 1/4 cups ice water and stir, just until a batter forms. (The batter will be thin, with small lumps and bubbles.) Place the batter bowl inside the bowl of ice to keep cold.
• Using tongs, coat the onion rings with the batter, letting the excess drip off. Working in batches, drop the rings into the oil and fry until light golden, 2 1/2 to 3 minutes. Using the tongs, transfer the rings to paper towels to drain; return the oil to 360F between batches.
• Serve with the ketchup and ranch dressing.