Answer :

It is advised to always eat before drinking, especially foods high in protein. Having food in your stomach will help slow the processing of alcohol.Hence the foods with the least impact on the body's absorption of alcohol are foods not rich in protein. 
The foods which have the least impact on slowing the body's absorption rate of alcohol ARE FOODS RICH IN FIBERS.
Eating before drinking usually slow down the rate at which alcohol is absorbed into the human system. An individual drinking on an empty stomach can become intoxicated within thirty minutes depending on the quantity of alcohol consumed while an individual, who is drinking on a full stomach can take up to six hours before becoming intoxicated depending on number of drink taken. The type of food that slow down alcohol absorption the most is protein while the least effective is carbohydrates, which are mainly fibers.