Pull out the frozen apple juice from the freezer and let it thaw.
Pre-heat oven to 275 degrees F (135 degrees C). Set aside a 9-by-13-inch metal pan.
Mix oats, wheat germ and salt in a bowl. Pour the thawed apple juice concentrate into the oat mixture and blend thoroughly. Once combined, add seed mixture, and mix.
Pour mixture onto prepared pan while working the cereal into clumps. Bake for 30 minutes. Stir in the raisins and continue to bake until golden brown, about 15 minutes longer. Let cool. (Granola can be stored in an airtight tin for up to two weeks.)
You can double the recipe, but bake the granola in two pans. You also may need to increase cooking time. The key is to bake the granola until it is an impressive golden brown.