Miso Yaki Onigiri

Bahan-bahan (6 porsi)

• 2 Tbsp miso ((I used Hikari Miso Organic Red Miso))
• 1 tsp sugar
• 1 Tbsp mirin
• 3 cups cooked Japanese short-grain rice
• 10 shiso leaves (perilla/ooba) ((optional))
• 2 tsp toasted white sesame seeds
• Diamond Crystal kosher salt
• ½ Tbsp neutral oil