15 grams of honey is a small amount, roughly the size of a grape. It fills a glass 0.918 in (2.33 cm) wide and is shown in the photo next to a us dime, us quarter, and golf ball.

In kitchen measures
2.14 teaspoons
2.14 tsp · 0.714 tbsp · 0.045 cups
about the size of a grape
Honey typically ranges 1.35–1.45 g/mL depending on how it's packed. A firmly packed scoop weighs more.