Sins On Food And Drink
When something is clearly commanded (obligatory to do) or prohibited in Quran and Sunnah , its violation is a major sin which cannot be forgiven unless one repents and ask forgiveness with intention to never commit that act again. Eating or drinking something clearly prohibited in religion will result in a major sin, unless one does do under ‘Iztirar’. Please see for detail on major and minor sins : Discussion 80980