public function registerBrewingRecipe(BrewingRecipe $recipe)
{
$input = $recipe->getInput();
$potion = $recipe->getPotion();
$this->brewingRecipes[$input->getId() . ":" . ($input->getDamage() === null ? "0" : $input->getDamage()) . ":" . $potion->getId() . ":" . ($potion->getDamage() === null ? "0" : $potion->getDamage())] = $recipe;
}