- A clean 1 liter clear soda bottle
- 3/4 cup of water
- Vegetable Oil
- Fizzing tablets (such as Alka Seltzer, etc.)
- Food coloring
1. Pour the water into the bottle.
2. Use a measuring cup or funnel to slowly pour the
vegetable oil into the bottle until it's almost full. You may have to
wait a few minutes for the oil and water separate.
3. Add 10 drops of food coloring to the
bottle (we like red, but any color will look great.) The drops will
pass through the oil and then mix with the water below.
4. Break a seltzer tablet in half and drop the
half tablet into the bottle. Watch it sink to the bottom and let the
blobby greatness begin!
5. To keep the effect going, just
add another tablet piece. For a true lava lamp effect, shine a
flashlight through the bottom of the bottle.