I have a 1L french press jug that I fill with 80g of coffee, coarse grind (34 on 1zpreszo JX) and top with cold water making sure all the grounds are wet and stirring lightly to make sure they’re all wet. I leave it in the fridge for 12-18 hours and filter through the mesh. I dillute with hot water or just microwave it after dillution if I’m too lazy to boil (blasphemy I know). I sometimes mix it with tonic water or ice and drink chilled.
Make sure to pop it in the fridge. Room temperature extracts the acids somewhat which isn’t to my preference.
I make a 12 minute steep with 15g/300g coffee:water ratio. A bit coarser grind than what I’d use for pour over. I (accidentally) found out I like it the most.