Prepare the ingredients as shown. Dissolve the grass jelly powder in 4 1/4 cups water (1 liter), then cook on the stove according to the package instructions (about 3 minutes). Pour the cooked grass jelly into a container or mold, let it cool, and refrigerate. Based on experience, using 1 packet (50 grams) with 1 liter of water makes a soft jelly; for a firmer texture, use 3 1/3 cups water (800 ml). This amount is enough for the coconut coffee, and any leftover jelly can be served with sugar, basil seeds, and ice for a refreshing summer treat!

Usually, people just brew the coffee hot for this drink. For the coconut milk and sweetened condensed milk, blend them with ice. Since I'm careful about my stomach, I cook a mixture of 1/4 cup coffee (60 ml), 1/2 cup coconut milk (120 ml), and 1/3 cup sweetened condensed milk (100 ml) for 2 servings. Heat and stir until well combined, then remove from heat and let cool. When ready to serve, add ice to 2 glasses, pour in the cooled coffee mixture, and blend until smooth.