How to Microwave Glass Coffee Cups

Heating a glass coffee cup in the microwave requires the appropriate knowledge to ensure that you avoid damage. Many people place coffee cups in the microwave to heat liquids, like water, or to reheat their coffee. When you place the glass coffee cup in the microwave, you need to be certain the glass is microwave safe. Water and other liquids need to be monitored in the glass coffee cups when you place them in the microwave so the liquid does not explode.

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Instructions

- 1
  Inspect the glass coffee cup for a "Microwave Safe" message on the bottom of the cup. If the cup has this message, then you can safely microwave it. If the glass does not indicate that it is microwave safe, then inspect it carefully.
- 2
  Examine the coffee cup for hand painted designs. Avoid placing coffee cups in the microwave that are hand painted because the paints can become hot and melt.
- 3
  Look for metal on the coffee cup. Avoid placing the mug into the microwave. These can start a fire.
- 4
  Fill the coffee cup with water or the liquid that you want to heat. Place the coffee cup in the middle of the microwave.
- 5
  Heat the coffee cup in the microwave. If your microwave has a reheat or liquid button, press the button and follow the directions on the microwave screen. If your microwave does not have this button, place the coffee cup in the microwave for 30-second intervals on high. Stir the liquid slightly and continue to microwave until it reaches your desired temperature.
- 6
  Remove the glass coffee cup from the microwave with an oven mitt. The glass will be hot and you do not want to burn your hands.

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