Pandan Rice Cake (Vietnamese Banh Duc La Dua)

Name: Pandan Rice Cake (Vietnamese Banh Duc La Dua)
Prep time: 30 min
Cook time: 30 min
Total time: 1 h
Cuisine: Vietnamese
Ingredients: 40g (1.4 oz) pandan leaves (+ 400ml (2 cup) water); 200g (7 oz) rice starch/tapioca starch; 1/4 tsp salt; 30g (2 tbsp) sugar; 30g (2 tbsp) cooking oil; 200 g 7 oz coconut milk; 100 g 3.5oz rice starch/tapioca starch; 15 g 1 tbsp cooking oil; 15 g 1 tbsp sugar; A pinch of salt; Roasted peanuts (Optional ); Roasted white sesame (Optional); Fresh coconut flakes (Optional); Coconut milk (Optional)