What ingredients do you use for your homemade beer?
I typically use kits. Various places sell them. They are basically a can of malted barley and hops. Then I have to add more dried malt or Dextrose, a measured amount of hot water, mix, then add cold water, then yeast at the right temperature. The kit comes with yeast but saflager is a superior yeast for lagers (which also costs $6 a packet) so I reuse yeast after each fermentation (it multiplies and is found at the bottom of the fermenter after bottling off). If I reuse it, I "clean" it, which is just letting it settle in fresh water a few times.
No other ingredients, usually. Sometimes I add lime. Sometimes I use additional different hops for different flavor.
I've also malted my own barley (should say - let it go through the germination process then halted that at the appropriate time). Unfortunately, I can't complete that process for beer - as I can dry it out in my dehydrator to reduce the moisture suitable for kilning - but as of now my oven doesn't work. One of the few things I need to get fixed around my place.
I'd rather do the process from scratch instead of buy kits (cheaper too - 4kg of dried malt costs around $42, whereas the unmalted grain is around $28 for the same amount) - and all malt beer tastes better than using Dextrose only or a mixture of Dextrose and Malt.