Three-color jelly material: orange juice 300ml, blackcurrant juice 300ml, milk 300ml, jelly powder or Geely powder 45g. Practice: 1. Divide 45 grams of jelly powder into three equal parts. 2. Pour the blackcurrant juice into a small pot, add some jelly powder, stir well, and then boil. 3. Wash the small pot, then pour in the milk, add a part of jelly powder, stir and boil evenly, then pour it into the solidified red jelly, and let it cool and solidify. 4. Wash the small pot, then pour in the orange juice, and then add some jelly powder, mix well and boil. Pour into the frozen custard and cool until it is completely solidified. 5. Pour the solidified jelly into a chopping board or plate, carve patterns with a mold or cut into blocks directly with a knife. Suggestion: 1. In order to prevent the jelly from solidifying and unable to make patterns, the amount of jelly powder or gelatine powder should be a little more than when making ordinary jelly. 2. The first color to be made will be the last color in the upper layer. The white milk layer is generally in the middle. 3. You can also change orange juice into mango juice and blackcurrant juice into grape juice or kiwi fruit juice according to your own taste. Finally, if it is not easy to pour out when demoulding, you can draw a circle on the edge of the container with a knife, and the jelly will be easily poured out.