Post-mortem tests found 133mg of alcohol per 100ml blood in Mr Elworthy's bloodstream.
In December Perkins sold a 1000ml bottle of moonshine whiskey to two 18-year-old volunteers in a police sting.
The next day police seized 45 litres of ready-to-drink alcohol and 75 litres of alcohol still in the processing stage from Perkins' house.
Defence lawyer Eymard Bradley said a lot of the alcohol was for Perkins' own use and he said he would stop selling it to anyone else.
Judge Chris Somerville said Perkins had 10 previous drink-driving convictions and called for a sentencing report.
He remanded Perkins to August 29 for sentencing.