1. What is Popcorn Expansion?

Popcorn kernels expand dramatically when heated, typically increasing in volume by 30 to 40 times their original size. This calculator helps estimate how much popped popcorn you'll get from a given amount of unpopped kernels.

2. How Does the Calculator Work?

The calculator uses the popcorn expansion formula:

Where:

• \( Unpopped \) — Volume of unpopped kernels (cups)
• \( Expansion Factor \) — Typically between 30-40

Explanation: The expansion factor accounts for how much the kernels will expand when popped, which varies based on popcorn type and popping method.

3. Importance of Expansion Factor

Details: The expansion factor is crucial for accurate estimation. Commercial popcorn typically expands 35-40 times, while home-popped might be closer to 30-35 times.

4. Using the Calculator

Tips: Measure unpopped kernels by volume (cups) and select an appropriate expansion factor based on your popping method and popcorn type.

5. Frequently Asked Questions (FAQ)

Q1: Why does expansion vary?
A: Expansion depends on kernel moisture, variety, and popping method (air, oil, microwave). Higher quality kernels typically expand more.

Q2: How much unpopped popcorn makes 1 gallon popped?
A: Approximately 0.25-0.33 cups unpopped (using 30-40 expansion factor for 1 gallon = 16 cups).

Q3: Does measuring by weight work?
A: Yes, but you'll need weight-to-volume conversion (about 1 oz unpopped = 1/2 cup unpopped = 15-20 cups popped).

Q4: Why does some popcorn not pop?
A: Unpopped kernels ("old maids") may result from insufficient moisture, improper heating, or damaged kernels.

Q5: How to maximize popping expansion?
A: Use fresh popcorn, store properly, and ensure even heating with proper oil temperature (about 350-400°F).