Cast-iron baking molds must be seasoned before being used for the first time, and re-seasoned as necessary. This helps seal the pores of the metal to prevent sticking. Here is a larger picture of a well-seasoned cast-iron lamb mold
- To season a brand-new cast-iron mold or pan, heat oven to 300 degrees. Thoroughly wash the cast-iron in hot, soapy water. Rinse and dry thoroughly. Apply a liberal coat of solid vegetable shortening to every nook and cranny. Place on a baking sheet, open side up, and heat 1 hour. Cool, pour off any remaining shortening, and wipe clean with a paper towel. DO NOT WASH!
- Before pouring in batter, using a pastry brush, apply solid vegetable shortening to every crevice and then flour. Tap out any excess flour. The mold is now ready to be filled. After unmolding the finished product, don't wash, just wipe the interior with a paper towel and the exterior with a damp cloth.
- On subsequent uses of the mold, even though it has been seasoned, before pouring in the batter, the mold must re-greased and heated for 20 minutes at 375 degrees. Reduce the oven temperature to 350 degrees and pour off any accumulated shortening, cool, and re-grease and flour before pouring in the batter. See the instructions for Easter Lamb Cake recipe.
- To reseason a mold or pan that is starting to stick, repeat step 1.
- To reseason a rusty, old cast-iron mold, heat the oven to 275 degrees. Clean the pan very well, making sure to scrub off any dried/baked on food. Dry it thoroughly and coat liberally with solid vegetable shortening. Bake the pan in the oven for at least 15 minutes. Take the pan out of the oven and pour out the excess shortening. Then put the pan back in the oven for at least 2 more hours. Repeat this process at least twice, more if the pan was really rusty.
- DON'T DO THIS:
- Don't stack cast-iron molds or pans on top of each other. They will get scratched and lose their stick-free properties.
- To avoid condensation and, therefore, rust, don't store cast-iron molds or pans with their lids on.