- Corn syrup

- Water

- Powdered milk

- Vegetable oil

- Salt

- Emulsifiers

- Food coloring(s)

Procedure:

1. Mixing Ingredients:

- Combine corn syrup, water, powdered milk, vegetable oil, salt, and emulsifiers in a large mixing bowl.

2. Heating and Stirring:

- Heat the mixture over medium-low heat while constantly stirring to ensure uniform mixing.

3. Color Addition:

- Once the mixture is heated thoroughly and well-blended, add the desired food coloring(s).

4. Cooling and Freezing:

- Let the mixture cool down for a bit, then place it in the refrigerator for pre-cooling.

- Transfer the mixture to an ice cream maker and follow the manufacturer's instructions for churning and freezing.

Color-Changing Secrets:

- Thermochromic Pigments: Thermochromic pigments are often used in color-changing ice cream. These pigments change color when exposed to different temperatures. As the ice cream melts and warms, the pigments react, causing the color to shift.

- pH-Sensitive Dyes: pH-sensitive dyes are another common ingredient in color-changing ice cream. These dyes change color when exposed to changes in pH levels. As the ice cream melts and becomes less acidic, the pH level changes, causing the dye to react and change color.

The combination of these two types of ingredients creates the color-changing effect in ice cream. As the ice cream melts, the pigments and dyes react to the temperature and pH changes, causing the color to shift. This creates the exciting visual experience of ice cream that seems to change color as you eat it.

Remember, for best results, follow the specific instructions provided with your ice cream maker and experiment with different food coloring combinations to create your desired color changes.