Question:
Is one allowed to use the same sandwich maker to warm up dairy and meat if one wraps the food up in parchment paper and if one used it this way is the sandwich maker treif?
Answer:
Hello,
You may not use the sandwich maker for meat and dairy, even if they are wrapped in parchment paper. First, the parchment paper often develops holes, allowing flavors to leak through. Second, it is very difficult to wrap the food so it is airtight and no zeah can escape. If zeah is present between the parchment paper and the sandwich maker, it will transfer the milky and meaty taste and make it treif. Therefore, even if it was already used this way, I would consider it treif.
Best wishes
