• 60 g (1/2 cup) toasted black sesame seeds
• 50 g (1/4 cup) brown sugar ((or regular sugar))
• 85 g (6 tablespoons) unsalted butter (, softened)
• 200 g (1 1/2 cup) glutinous rice flour (, and extra for dusting)
• 200 ml (2/3 cup + 1 tablespoon) warm water (100°F / 40°C)