For the sour cream topping: Whisk together the sour cream, hot sauce, green onions and sea salt.
For the corn cakes: Whisk together the flour, cornmeal, salt, sugar and baking soda in a large bowl until incorporated. Whisk together the milk and eggs in a separate bowl. Pour the milk mixture into the dry ingredients and add the corn, cheese, butter and jalapenos and mix well. Heat 1 tablespoon of the oil a large nonstick skillet over medium-high heat. Use an ice-cream scoop to pour the batter for each cake. Cook until golden, about 2 minutes per side. About halfway through cooking, add the remaining oil to the skillet. Transfer the cakes to a plate lined with paper towels to drain and sprinkle with sea salt, if desired. Serve warm with sour cream topping.