Do like. I made 'homemade Kahlua' when I was in school using food essence (maybe coffee and chicory essence? $6AUD for a litre of Kahlua was winning!). I mean before it was banned when all those kiddies started ending up in hospital because they couldn't handle it.
You'll be hearing from my lawyers.
Kahlua was £12 in Waitrose so it's been White Russians in the sun for me.