15 grams of loose leaf tea is a moderate amount that fills about 3.62 tbsp (53.6 mL). When poured into a loose pile, it is about the size of a large egg, measuring 2.92 in (7.42 cm) wide and 1.46 in (3.71 cm) tall.

In kitchen measures
3.62 tablespoons
10.9 tsp · 3.62 tbsp · 0.226 cups
about the size of a large egg
Loose leaf tea typically ranges 0.2–0.35 g/mL depending on how it's packed. A firmly packed scoop weighs more.