Baking soda1.5g.

, citric acid (or tartaric acid)1.5g.

, sugar 10g,

Proper amount of juice

The manufacturing method of opening and closing time is as follows

Use a clean water bottle with a lid (the lid should be tightly closed), pour the prepared cold boiled water into the bottle, not too full (about 8 1% of the bottle volume), and add sugar and appropriate amount of fruit juice. Then add 1.5g baking soda, and finally add 1.5g citric acid (or tartaric acid), screw on the bottle cap immediately, gently shake the bottle, and a large number of bubbles will be generated in the bottle, which will roll up and down continuously, and it can be drunk in about 20 minutes.

If you sweat a lot in summer, you can use normal saline soda instead of juice soda. The method is the same, except that (sugar and juice) are replaced with salt in an appropriate proportion.

Note: bottles and caps must be firm. Before gently shaking the bottle, add edible sodium bicarbonate (baking soda) at the ratio of 100 to 2, and then gently stir with chopsticks. After sodium bicarbonate (baking soda) is dissolved, citric acid is quickly added in the ratio of 80 to 2, and the bottle is immediately tightened with a lid. Shake the bottle gently at first.

Put the cake in the refrigerator to cool. good