void
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You don't want to boil the grain bag, it will introduce bitterness. You want to:
1) Steep the grain bag in around 70 deg water. An easy method to get close to this temp is to add one part cold water to two parts boiling - I'd aim for at least 5 litres if you're doing a 60 min boil. Steep your grains for 30 mins, then let all the liquid drain out of the bag into your pot (I squeeze it to get the most out).
1a) If you want to take it a step further, you can pour extra water over the bag to rinse the remaining liquid out - this is called sparging. It helps to place the bag in a sieve sitting over your pot.
2) Bring your wort gravity up to about 1.040 to get the most out of your hops. Do this by adding 100g of your dry malt extract (DME) per 1 litre of liquid, so if you have 5 litres, add 500g.
3) Bring the wort to the boil. This will kill off any nasties that were in the grain.
4) Start your hop boil - some people use hop bags, others like myself just chuck them in the pot. Same with dry-hopping - straight into the fermenter.
The hop pellets will break up in the boil almost immediately. Once in your fermenter they'll settle to the bottom with the rest of the trub. At worst, your first gravity reading will have some solid particles that floated into your tap, but by the time you're ready to bottle/keg it'll be clear. I wouldn't bother with a sieve.
If you're after ultra-clear beer, there are a bunch of techniques you can use such as fining agents, secondary fermentation, cold-crashing etc. I'd worry more about getting the basics down first though. Keep it simple for now, there's always the next brew to try a new technique.
1) Steep the grain bag in around 70 deg water. An easy method to get close to this temp is to add one part cold water to two parts boiling - I'd aim for at least 5 litres if you're doing a 60 min boil. Steep your grains for 30 mins, then let all the liquid drain out of the bag into your pot (I squeeze it to get the most out).
1a) If you want to take it a step further, you can pour extra water over the bag to rinse the remaining liquid out - this is called sparging. It helps to place the bag in a sieve sitting over your pot.
2) Bring your wort gravity up to about 1.040 to get the most out of your hops. Do this by adding 100g of your dry malt extract (DME) per 1 litre of liquid, so if you have 5 litres, add 500g.
3) Bring the wort to the boil. This will kill off any nasties that were in the grain.
4) Start your hop boil - some people use hop bags, others like myself just chuck them in the pot. Same with dry-hopping - straight into the fermenter.
The hop pellets will break up in the boil almost immediately. Once in your fermenter they'll settle to the bottom with the rest of the trub. At worst, your first gravity reading will have some solid particles that floated into your tap, but by the time you're ready to bottle/keg it'll be clear. I wouldn't bother with a sieve.
If you're after ultra-clear beer, there are a bunch of techniques you can use such as fining agents, secondary fermentation, cold-crashing etc. I'd worry more about getting the basics down first though. Keep it simple for now, there's always the next brew to try a new technique.