An average 16 oz beer has around 17g of Carbs while a 12 oz bottle as around 13g. So, even just one beer is going to exceed the 10g – 15g of Carb restriction you are trying to adhere to for a single particular meal. Chances are, you are going to be kicked out of ketosis if you have one or two beers.
Now you have to decide it that is a big deal for you or not. For me, I seem to be able to deal with 2 beers in an evening and still find I am in ketosis in the morning. More than that, and I am not. That also assumes I am careful to consume very few Carbs in the food that I eat. I have found that this is where the Pruvit Ketone Supplement comes into it’s own. I take a caffeine free serving before I go to bed and my regular caffeinated one in the morning and I seem to ease back into Ketosis over the next day or two with very little drama.
Wine is generally a much better option on a Low Carb Diet. The average glass of wine has about 3.8g of carbs so, from a carbohydrate point of view, you can have a few glasses in an evening without jeopardising your ketotic state. Every wine is different, obviously, but dry whites and reds are generally a bit lower in carbs than the others.