The ideal coffee-to-water ratio for AeroPress brewing can vary depending on personal preference and the desired strength of the coffee. However, a commonly recommended ratio is 1:15. This means using 1 gram of coffee for every 15 grams of water. It's important to note that the brewing time and grind size also play a significant role in achieving the perfect cup. Experimenting with different grind sizes and finding the ideal brewing time can help you fine-tune the flavor and extraction of your AeroPress brew.