Bring the pasta to a boil over the stove and cook until fully done.
1 pound dry spaghetti, Water for boiling
Drain the pasta and add 1 tablespoon of olive oil. Mix into the pasta well.
1 tablespoon olive oil
Divide the pasta into 6 equal portions.
Use 6 Ziploc bags for the next steps. Add coloring to each Ziploc bag then add 1 portion of pasta to the bag. See coloring instructions above.
Food coloring drops
Close the bag shut and massage the food coloring into the pasta until it fully bleeds into the noodles, dying it a solid color. Add more food coloring if needed. Allow the pasta to rest inside the bag for 5-10 minutes. Repeat steps 4 and 5 for each color and portion of pasta.
After the noodles have soaked in the food coloring, remove from the bag and rinse them separately in a strainer or colander. Pat dry. Enjoy the rainbow noodles with a spaghetti dinner or use them for a fun activity!
Notes
Tips:
Start on the lower ends of the food coloring, especially for the blue and purple colors. You can always darken the coloring but its very hard to lighten it.
Add a little bit of water to help distribute the dye into the bags. This will help the food coloring not be as concentrated and can help evenly coat the pasta.
Apply food coloring in multiple places in the pasta bags. This will help distribute the color evenly.
Really massage the coloring into the pasta. This may take 2-3 minutes per color to distribute the dye evenly.