Back before I discovered caffeine was making my life worse, I used the same ratio. I didn’t dilute though. I just took a 20 oz container and filled it to about 17 oz with the coffee, poured in 2-3 TBSP of sugar and topped it off with a bit of 2% milk.
Minor thoughts for anyone who is interested and hasn’t tried making it yet:
- Do not cold brew in the refrigerator. It doesn’t taste quite right. Room temperature will do.
- You can go fancy if you really want to … but if you just want to try it out, don’t bother. Throw some grounds in some water for about 12 hours and filter it using one of your coffee filters. Then, throw it in the fridge until it’s cold and mix however you want.