"which"
Here's why:
You're looking for a word that connects the phrase "fish and chips" to the idea that it's your favorite meal. "Which" is used to introduce a non-restrictive clause that provides additional information about a noun (in this case, "fish and chips").
اذا كان لديك إجابة افضل او هناك خطأ في الإجابة علي سؤال We had fish and chips, ........ is my favourite meal اترك تعليق فورآ.