More cold brew coffee and coffee lemonade

So for making some cold brew coffee, which I sometimes use for coffee lemonade later, I currently have the following recipe.

Cold brew coffee

1. Grind 5 g per dl water of fruity and sweet coffee beans (this summer I have used da Matteo's Kenya Gitchathaini AA lot 008). Some of the volume will get lost so calculate for a little more than you need (10% extra or so).
2. Pour the ground coffee beans in a plastic bowl (or something else that doesn't give taste to the coffee).
3. Pour the water over the coffee. The water should be around 30 degrees Celsius, what feels comfortable for a finger held in the running tap water.
4. Set at timer for 2 hours. Two to three hours worked well when I tested different times. Longer or shorter didn't give the result I wanted (Cold brew coffee) but it, of course, depends on the beans and taste of the brewer. Do some experimenting on your own.
5. Stir slightly once or twice during the time.
6. Filter the coffee through a regular coffee filter. If you're brewing more than half a litre you probably gonna need to switch filters.
7. If you wanna be careful you filter it once more. It makes it better for storing in the refrigerator (less particles, less after-brewing).
8. Fill bottles and put in refrigerator, can be stored at least a day and a night.

Coffee Lemonade

1. Take a slice of lemon or two of lime depending on taste and squeeze juice and drop it/them in a glass for about a dl or a little more.
2. Optional: Take half a teaspoon of muscovado sugar and drop in the glass.
3. Pour a decilitre of chilled cold brew coffee over the slice(s) and stir.

Storage

Coffee and sliced lime or lemon can be stored in refrigerator (put a little plastic or a lid over the fruit) and cold brew coffee black, with sugar, with lime/lemon or both sugar and lime/lemon can easily be stirred together when wanted.