For making French press coffee, the general guideline for coffee-to-water ratio is about 1:15 to 1:16 by weight. Here are common measurements based on different sources:

• For about 12 oz (350 ml) of water, use roughly 14 to 16 grams of coffee grounds, which is about 3 to 4 tablespoons

• Another common ratio is about 17 to 18 grams of coffee per 300 ml (10 oz) of water, roughly 2 to 3 tablespoons or teaspoons per cup depending on size and personal taste

• A precise ratio often recommended is 65 grams of coffee per liter of water, which translates to about 6.5 grams per 100 ml

• Brew time is typically around 4 minutes with coarse ground coffee and water heated to about 90-95°C (195-205°F)

Practical example:

If you have a 500 ml French press, use about 30 to 34 grams of coarse coffee grounds with 500 ml of hot water, steep for 4 minutes, then press and serve

Summary table:

Water Volume| Coffee Amount (grams)| Coffee Amount (tablespoons)| Ratio (coffee:water)
---|---|---|---
300 ml (1 cup)| 17-18| 2-3| ~1:15 to 1:16
350 ml (12 oz)| 14-16| 3-4| ~1:15
500 ml (16 oz)| 30-34| 4-5| ~1:15
1 liter (34 oz)| 65| ~8-10| ~1:15

Adjust the amount slightly based on taste preference for stronger or lighter coffee. Use a coarse grind and steep for 4 minutes before pressing to avoid bitterness