The Quran is very clear that there are only four dietary prohibitions. These four prohibitions are found in the following four verses: 2:173, 5:3, 6:145, and 16:115. The verse that best articulates these four dietary prohibitions is 6:145, which states:
6:145 Say, “I do not find in the revelations given to me any food that is prohibited for any eater except: (1) carrion, (2) running blood, (3) the meat of pigs, for it is contaminated, and (4) the meat of animals blasphemously dedicated to other than GOD.” If one is forced (to eat these), without being deliberate or malicious, then your Lord is Forgiver, Most Merciful.
قُلْ لَا أَجِدُ فِي مَا أُوحِيَ إِلَيَّ مُحَرَّمًا عَلَىٰ طَاعِمٍ يَطْعَمُهُ إِلَّا أَنْ يَكُونَ مَيْتَةً أَوْ دَمًا مَسْفُوحًا أَوْ لَحْمَ خِنْزِيرٍ فَإِنَّهُ رِجْسٌ أَوْ فِسْقًا أُهِلَّ لِغَيْرِ اللَّهِ بِهِ فَمَنِ اضْطُرَّ غَيْرَ بَاغٍ وَلَا عَادٍ فَإِنَّ رَبَّكَ غَفُورٌ رَحِيمٌ
Now there is some debate regarding the fourth dietary prohibition and if it can include non-animal products. The confusion for this line of reasoning is that some translations in regards to the fourth dietary prohibition simply state “that which is dedicated to other than God.” The misunderstanding occurs because in English the word “dedicate” has a wider meaning than the Arabic word uhilla أُهِلَّ which this word is translated from. In English, one can dedicate a book, song, boat, or dish to anyone, but this goes beyond what the word uhilla أُهِلَّ means in Classical Arabic.