Brew a strong cup of coffee and allow it to cool for about 15-20 minutes.

In a medium jar or bowl, combine cooled brewed coffee with plant-based milk, chia seeds, maple syrup or honey, and vanilla extract. Mix vigorously.

Let the mixture sit at room temperature for about 5 minutes.

Cover with a lid or plastic wrap and place it in the refrigerator. Chill for at least 4 hours or overnight.

Remove from the refrigerator and stir to smooth out any clumps. Adjust thickness with more plant-based milk if desired.