Yes, it is generally safe to put lemon juice in a slow cooker. Lemon juice can add a pleasant tangy flavor to your dishes and complement various types of recipes. When used in moderation, lemon juice is unlikely to cause any safety concerns in a slow cooker.
However, there are a few things to keep in mind:
Acidity: Lemon juice is acidic, and acids can affect certain materials, especially reactive metals like aluminum. Most modern slow cookers come with ceramic or stainless steel pots, which are safe to use with acidic ingredients like lemon juice. Just avoid using a slow cooker with a non-stick pot that has been damaged, as the acid can exacerbate any issues with the coating.
Minimal Amounts: You typically don't need to use large quantities of lemon juice in a slow cooker recipe, as the long cooking time will allow the flavor to develop and distribute throughout the dish.
Timing: If a recipe calls for lemon juice, it's usually added at the beginning of the cooking process. The acid in the lemon juice can help tenderize meat and enhance the overall flavor.
Fresh vs. Bottled Lemon Juice: While using fresh lemon juice is preferred for its flavor, bottled lemon juice can also be used if fresh lemons are not available.
As long as you use lemon juice in moderation and follow your recipe's instructions, there should be no issues with incorporating it into your slow cooker dishes. It's a great way to add a refreshing twist to your meals and enhance their taste.