Green tea can sometimes have a bitter taste, but there are ways to counteract that. Always allow the pressure cooker to complete a full natural release when done to avoid the tea turning bitter. Additional sugar, honey, and a little fresh lemon juice all help to counter any bitterness. If you feel the tea is slightly bitter after making the recipe as is, add more honey 1 tablespoon at a time. Add white sugar 2 tablespoons at a time, since it is not as strong as honey. Squeeze lemon slices into individual serving glasses or the entire jug, 1 slice at a time. It's also important not to squeeze the tea bags into the water when done, as this can also cause a bitter tea. *I have never had bitter green tea when using the Bigelow brand. However, if you use something different, the strength and bitterness may vary.