Cover pods with water; bring to a boil. Let the tamarind soak for 5 minutes (+/-) then rinse with cold water and drain. Remove the outer shell and the stringy fibers from the pods.
Rinse out the saucepan. Add 4 cups of boiling water and the tamarind. Allow the tamarind to soften 15-20 minutes.
Pour the tamarind and its liquid through a strainer into a vessel large enough to hold it. Using the edge of a wooden spoon (or similar), press as much pulp through the strainer as you can get through.
After rinsing out the pan, add the tamarind, its liquid, and the sugar. Bring to a bowl, then reduce heat to a low boil. Cook 20-30 minutes until slightly thickened. Allow mixture to cool, then add the juice of 1 lime. Stir to combine.
Calories are an approximation only from MyFitnessPal.com. See Tips and FAQ in post for additional information.