Directions

1. Combine apples, apple cider, Calvados, cinnamon, ginger, cardamom, nutmeg, mace, cloves, sugar, and lemon juice in a large heavy-bottomed saucepan. Place mixture over medium-high heat, and cook, stirring often with a large wooden spoon to prevent scorching, until apples are broken down and saucy, about 1 hour. Mash any large pieces of apple with large wooden spoon to help them break down.
2. Reduce heat to medium. Using a rubber spatula, scrape out apple mixture from pan, and transfer to a small saucepan. Continue cooking, stirring occasionally, until apples are completely broken down and butter is very thick and dark, about 2 1/2 hours. Remove from the heat, and let stand to cool. Store in an airtight container for up to 1 month in the refrigerator or 6 months in the freezer.