In a medium saucepan over medium heat, combine brown sugar and water.
2 cups brown sugar, 1 cup water
Stir until sugar dissolves, about 5 minutes, then remove from heat.
Brown Sugar Boba
Follow the instructions on your package. For quick-cooking boba: Bring water to a boil in a large pot. Slowly, add the black tapioca pearls.
8 to 10 cups water, 1 cup uncooked black tapioca pearls
Once they float, cover pot and cook over medium heat, 3-5 minutes. Turn off heat, letting them continue to cook for 2 minutes for al dente boba or up to 5 minutes for softer boba.
Strain, then rinse with cold water for 20 seconds to stop the cooking. Transfer to a bowl. Top with brown sugar syrup and cover for 10 minutes. Use within a few hours.
Notes
Homemade brown sugar boba is best enjoyed the same day it's made. The simple syrup will last up to 1 month in the fridge, but toss it if it ever looks cloudy.