Baking products in addition to the production of products such as tiger cake will use the oven's upper and lower heat, that is, the upper and lower pipes of the oven should be open, otherwise you make a tart either below the tart crust is not cooked or tart crust baked overcooked, baked tart the optimal temperature is the upper fire 210 ℃, the lower fire 180 ℃, you can slightly adjust the upper and lower temperatures of the fire according to your oven.