Made of food grade silicone. BPA free, Non-toxic and Eco-friendly. Spray inside with cooking oil to make it easy to clean. Don't forget to pierce the yolks a few times before cooking in the microwave. 6~7 minutes is the golden time to complete in boiling water bath, we recommend leaving the lid on until 9 minutes if you don't like them runny. An ideal gift for everyone, these can be used to melt butter, chocolate, syrup.
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