In a medium-size bowl, combine the milk and lemon juice; the mixture will curdle and become like buttermilk.
Stir in the sugar, canola oil, salt, thyme, and lemon zest.
Add the flour, cornmeal, and baking powder.
Stir to combine; a few lumps are okay.
Stir in ¾ cup blueberries and the corn.
Preheat the oven to 300°F.
Lightly coat a large skillet with oil and place over medium heat.
Working in batches, scoop ¼ cup of batter into the skillet for each pancake.
Cook for 3 to 4 minutes, or until the edges look set and bubbles are appearing on the tops of the pancakes. The bottoms should be golden brown.
Flip and cook the other side for 2 to 3 minutes.
Keep warm in the oven until all the pancakes are cooked. You should get 12 pancakes.