copper pennies recipe
- The Best copper pennies recipe
- Copper Pennies: A Simple Science Experiment Dessert
- 🥘Ingredients
- 👨🍳Directions
- 🔧Equipment
- 📊Nutrition Facts (per serving)
- 📝Notes
- Watch Video Of How Copper Pennies: A Simple Science Experiment Dessert Works
- ❓ Frequently Asked Questions About Copper Pennies: A Science Experiment Dessert
The Best copper pennies recipe
I also love how easy they are to customize. You can swap out the chocolate for different flavors, like peanut butter or caramel, or even make them into little holiday treats. They’re perfect for a casual weekend brunch or a fun snack for a game day. Plus, they’re light on sugar and packed with protein and healthy fats, so they’re a healthier option than most candy. It’s a no-fuss recipe that feels special, whether you’re making them for a family gathering or just for yourself.
Copper Pennies: A Simple Science Experiment Dessert
A fun, no-bake treat that turns pennies into copper-colored coins using baking soda and vinegar. Perfect for kids and adults alike to enjoy as a sweet snack or science activity.
🥘Ingredients
- 1 cup water
- 1/4 cup baking soda
- 1/2 cup white vinegar
- 4 old pennies (pre-1982, copper-coated)
- 1/2 cup granulated sugar
- 1/4 cup water
- 1/2 teaspoon corn syrup
👨🍳Directions
-
1
Place pennies on a paper towel to remove excess oil. Rinse lightly with water if needed, then pat dry. -
2
In a small saucepan, combine water, baking soda, and vinegar. Stir until the baking soda fully dissolves and a fizzy reaction occurs. -
3
Submerge pennies in the vinegar mixture for 5–10 minutes, until they turn a bright copper color. -
4
Remove pennies and rinse under cool water to stop the reaction. Pat dry. -
5
In a separate saucepan, heat sugar, water, and corn syrup over medium-low heat until sugar dissolves and forms a thin syrup. Let cool slightly. -
6
Dip each copper penny into the sugar syrup, letting excess drip off. Place on a tray to set.
🔧Equipment
- Mixing bowls
- Whisk
- Small saucepan
- Oven-safe tray
- Paper towels
📊Nutrition Facts (per serving)
📝Notes
Watch Video Of How Copper Pennies: A Simple Science Experiment Dessert Works
❓ Frequently Asked Questions About Copper Pennies: A Science Experiment Dessert
How long does it take to turn copper pennies silver?
The process usually takes about 24 to 72 hours, depending on humidity, temperature, and the specific copper alloy in the pennies. In humid conditions, the reaction may speed up slightly, but don’t rush it—waiting overnight often yields the best results.
Why do some pennies turn silver faster than others?
Pennies from different years have varying copper content and alloy compositions. Older pennies (pre-1982) have more copper, which reacts faster with ammonia and oxygen. Newer pennies, with zinc coatings, may take longer or not turn as evenly.
Can I use vinegar instead of ammonia?
No—vinegar alone won’t work. You need diluted ammonia solution (1 part household ammonia to 3 parts water) for the chemical reaction to occur. Vinegar is acidic but lacks the right catalyst.
Do I need to rinse the pennies after they turn silver?
Yes, rinse them thoroughly with cold water to remove excess ammonia residue. Pat them dry with a clean towel to prevent water spots. Avoid soaking them longer than necessary to preserve the silvered appearance.
What if the pennies stop turning silver halfway through?
If the reaction stalls, check for two things: humidity levels (keep the container in a stable environment) and proper ammonia concentration. If needed, refresh the solution slightly and let them sit another 24 hours.
