I enjoy a 35 cl of Famous Grouse with no mixer on a Saturday night whilst snacking on Brazil nuts or Almonds, just wondering if this is excessive or will it knock me out of Ketosis.
Depends on your goals and inclination. The body uses energy in the following order:
Alcohol
Exogenous Ketones
Carbs
Protein
Fat
So the more Alcohol, the longer it takes to release fat for energy use.
If you have a lot of fat to shift, insulin resistance etc, how quickly do you want to resolve this. If you are really disciplined you might be able to get away with a small amount (then what is small?).
Answering my own questions, I haven't had an alcoholic drink in around 2.5 years. I bought some tequila at Christmas to have maybe half an inch, then just did not want it, so remains unopened. The ketogenic lifestyle is just that, if having a small amount of alcohol keeps you mostly on track and you are making progress then the big picture is the most important; I for example eat nuts, even though I know I could achieve my goals quicker without them.