How much malt hops yeast and water is needed to brew 1 liter beer?

You can't brew a full-fledged, balanced beer with just 1 liter of volume. Here's why:

* Extraction Efficiency: Homebrewers typically extract around 70-80% of the fermentable sugars from their malt. This means you'd need a very small amount of malt (likely less than 100 grams) for 1 liter.

* Yeast Viability: Yeast needs a certain volume of wort (unfermented beer) to thrive. A tiny batch would be very difficult to manage.

* Hops and Flavor: Hops are crucial for bitterness and aroma. Using them at a reasonable level in such a small volume would lead to overwhelming bitterness or lack of flavor.

* Practicality: It's incredibly difficult to accurately measure and manipulate such small amounts of ingredients, making it almost impossible to achieve consistency.

Here's a better approach:

1. Start with a Small Batch: If you're new to brewing, start with a smaller batch of 2-3 liters. This is still manageable and allows for some room for error.

2. Follow a Recipe: Look for beginner-friendly beer recipes online or in brewing books. They will provide specific ingredient amounts and instructions.

3. Use a Brewing Calculator: There are many online brewing calculators that can help you scale recipes and calculate ingredient amounts based on your desired volume.

Remember: Brewing beer is a process that involves careful planning, precise measurements, and a bit of experimentation. It's best to start with a larger batch and gradually work your way down to smaller volumes as you gain experience.