1 First of all, we need to prepare white vinegar, baking soda, cold boiled water and sugar;
2. Pour boiling water into the glass, add a spoonful of sugar, a spoonful of baking soda, and finally add a spoonful of white vinegar. The ratio of baking soda to white vinegar is 1:2, so that we can see that the water in the cup begins to bubble;
Next, we will stir the water evenly with a spoon and let it stand for 5 minutes. It can also be put in the refrigerator in summer, which tastes better.
Summary:
1, prepare white vinegar, baking soda, cold boiled water and white sugar;
2. Pour boiling water, sugar, baking soda and white vinegar into the cup in turn, stir and let stand for 5 minutes.