Feni is a type of drink that comes from Goa, a place in India. Feni is made from the sap of a special kind of palm tree called the cashew tree.
To make feni, people need to collect the sap from the cashew tree. They do this by climbing up the tree and tapping it with a special tool that looks like a small knife. The sap runs out of the tree and is collected in a container.
After the sap is collected, it's left to ferment - that means that it sits in a container and starts to change and turn into feni. The fermentation process can take a few days to a few weeks.
Once the fermentation process is done, the feni is distilled. This means that it's heated up to make it turn into steam, and then the steam is cooled down again. This process separates the feni from the water in the fermented sap, so you're left with a strong, clear liquid.
People in Goa like to drink feni by itself, or they mix it with other things to make cocktails. Some people say that feni tastes a little bit like coconut - it's definitely a unique taste!