Quick Answer
Animal rennet must be from halal-slaughtered animals. Microbial rennet is halal.
Detailed Explanation
What is it?
Rennet is a popular ingredient.
Why it may be doubtful
Rennet is used to curdle milk for cheese. "Animal rennet" from calves/cows is only halal if the animal was slaughtered Islamically. "Microbial rennet" or "Plant rennet" is 100% halal. Always check cheese labels.
Fiqh considerations
General Islamic dietary principles require that ingredients be free from non-Zabiha meat, insects, and intoxicating alcohol.
Practical advice
Always read the latest ingredient label or use the allhalal.info scanner app, as manufacturers frequently change their recipes. Look for certified vegan or halal symbols where possible.
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