How do you soften instant coffee that has solidified?

You can't really "soften" solidified instant coffee. It's not like a solid piece of food that can be rehydrated. The coffee has already been dried and the granules have clumped together.

Here's what's likely happened and what you can do:

* Moisture Absorption: Instant coffee is hygroscopic, meaning it absorbs moisture from the air. This can cause the granules to clump together, forming a solid mass.

* Storage: Improper storage, such as in a humid environment or an open container, can accelerate this process.

Unfortunately, once the coffee has solidified, it's usually best to throw it away. Here's why:

* Taste: The clumped coffee will likely have a stale, bitter taste.

* Quality: The moisture absorption can change the chemical composition of the coffee, affecting its flavor and aroma.

How to prevent it from happening again:

* Store Properly: Keep instant coffee in an airtight container in a cool, dry place.

* Use a Desiccant: Consider adding a small silica gel packet to the container to absorb excess moisture.

* Buy Smaller Amounts: It's best to buy instant coffee in quantities that you can use quickly to minimize the chance of it solidifying.

While you can try breaking up the solid coffee and using it, it won't taste as good as fresh instant coffee. It's best to just start with a new jar.