[header] How to make homemade jello [title] Combine the juice, water, and agar agar. [step] Get out a small saucepan and pour in 1 ½ cups (355 ml) of juice , 1/2 cup (120 ml) of water and 1 tablespoon agar agar flakes or 1 teaspoon agar agar powder. Stir the mixture to combine the ingredients. 
[substeps] You can use any juice except for pineapple juice. Pineapple contains enzymes that will prevent the jello from setting up.