Food and Drink

Q: 

1. Alcohol is haraam and prohibited in Islam due to the fact that after having it, a person loses his senses and can not remember what he is doing and also you can get addicted to alcohol. My question is that if someone uses alcohol only for socialising, if he has a  few sips will it be fine or not?

2. There are some drugs which only boost your energy but you remain in your senses, such as cocaine and some other drugs. How does Islam differentiate between them. You remain in your senses but its not alcohol. Red bull drink also boosts the energy. Please explain. 

Q: Can we eat the food (veg only) given by Non Muslim Friends or neighbours?

Q: Could you please send me the details of the shar'ee ruling on cheese, as most of them contain animal rennet.

Q: Is it forbidden to drink water without eating or drinking anything before it in the morning?

Q: To take food, drink, make wudu and offer prayers at the house of Ahle Toshee (shia) is jaiz or najaiz?

Q: I have been reading a few things regarding alcohol and the Islamic views on it for a lesson I care for. I have some questions about it.

1. If someone consumes alcohol and then leaves it and repents will Allah forgive him.

2. Is there any rule that is someone consumes alcohol he cannot perform namaaz and touch or recite quran for 40 days as alcohol stays in the body for 40 days.

3. What are some of the ways one can repent about the sin of consuming alcohol?

Q: I would like to know what is the ruling regarding dolphins. I know that it is regarded as the pig of the ocean, however why is this so and ‎would the same rules and prohibitions regarding pigs also apply to dolphins. Would it be acceptable to attend dolphin shows or touch it etc.

Q: Are oysters haraam? What about oyster sauce and Chinese and Thai dishes using oyster sauce? What exactly is oyster?

Q: Are prawns categorized as fish and if not what are they and will this make them halaal, makrooh or haraam?

Q: I would like to know what types of fish are permitted to eat? I mean we as Sunni are told that shrimps are makrooh? What about Shark fish?