Question:
If I ate what may have been a nefucha or kefulah, am I chayev kares?
Is avoiding these a mere chumra or the letter of the law?
Answer:
If the matzoh was fully baked it is not chametz and you are not chayiv kares c”v, especially that it was baked before Pesach. Nevertheless we are noheg not to eat a kefula or nefucha because of the possiblity that it wasn;t totally baked and became chametz. See O:Ch 461-5 with M:B.
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