Gaji Namul (Steamed Aubergine Side Dish)

Name: Gaji Namul (Steamed Aubergine Side Dish)
Prep time: 25 min
Cook time: 45 min
Total time: 45 min
Yield: 4 portions
Ingredients: 2 garlic cloves; 20 g dark soy sauce; 15 g sesame oil; 10 g toasted sesame seeds; ½ tsp caster sugar; ½ tsp Korean chilli flakes (gochugaru); 1000 g water; 2 aubergines; ½ tsp fine sea salt; 2 pinches ground black pepper; 2 spring onions