Showing posts with label mashing. Show all posts
Showing posts with label mashing. Show all posts

Wednesday, April 18, 2007

Brewday Fun and Mayhem

Savannah Brown Ale
Today was a fun day at the DIY brewery. Man it takes a full day when brewing all-grain, but it's good fun. All my real work was done in the early hours, so I got a jump on brewing by milling 4kg of malt. (actually the wife did the hard part) I boiled up 10 litres of rinse water to use later in the day. I formulated a recipe for a brown ale based on brewer's malt, brown toasted and black malts and some dry malt extract.

By 10:30AM I was off and mashing. I mashed a single step infusion mash with a grist ratio of 3.4 litres of water for each per kilogram of malt. I think this works out to the standard 1.5 quarts per pound that my American friends use. Close anyways. I did a 20 minute protein rest at 50ºC as I know this malt has a little much protein. I started mashing at 11AM and held in at 66ºC for 80 minutes. Sweet!

While mashing, I made a make-shift lauter tun from my old friends the blue water jugs. I used a piece of food-grade 10mm tubing in a coil with slices in it as the manifold. I attached it right to the existing water tap on the jug. It fits perfectly. OK, you have to improvise here eh? See photo of the inside of the jug/lauter tun.

I really don't know if the plastic will make the final beer taste like plastic, but I couldn't detect any problems in the samplings of wort that I took before and during the boil. I do know that it works just like the real thing and after recirculating for a minute the bed was set.

For the sparge I used 10 litres at 75ºC and did a batch sparge. I can't be bothered with trickle and wait. I got almost 25 litres out in total and of course I had to use the two biggest pots I had on to hold it all. I like using two pots as I can make a side brew like I did today. In the smaller pot I added some different ingredients and changed the hop schedule.

The boil was 70 minutes all up with 60 of Nugget 12.8% AA, and 15 minutes of Cascade 7.5% AA. In the side batch I added 1/2 cup of brown sugar and in the main batch I added 500g of dark dry malt extract. This should give a more complex "brown" malty taste (I am hoping).

The big chill came with lots of bottles of ice. In fact I didn't have enough ice made to power the chiller tonight, so it's the royal treatment with air conditioning for these guys until they get into their own chiller tomorrow. By the way, on a hot day, the water here is 32ºC and really is not that great for chilling. At least 10 litres of ice is required to chill 20 litres of boiling wort to pitching temperature.

A package of Danstar Nottingham Ale yeast was rehydrated and tossed into a litre of wort pulled from the mash. I boiled and cooled the mini-wort and shook it like mad. Oh well, no harm done and Savannah Brown Ale is on her way. After 4 hours the yeast has gone into a frenzy, swirling and churning and bubbling like a city alive with people. Magic eh?

I'll keep you posted and take some photos of the action.I learned that the Heat index was 44C today. Man I could go for a beer right now.
Cheers!

Sunday, April 8, 2007

One Step Closer to 100% Homemade Beer

All Crushed and Ready to MashBrew Day at Last!
I thought I would keep you guys posted on my malting at home experiment.

Today, I did a 10 litre mini-batch with the generic malt I made. All manually crushed with a rolling pin (lots of work) like I mentioned before. For 3 kilos it took me over an hour!

I mashed with a 3.4:1 water to grain with 3kg of malt. I did a long 60 minute protein rest at 45ºC to 50ºC because I don't know the protein content of the malt. If it is heavy in protein I hope this will help. If it's lighter on protein the beer will likely be headless. Going for sweet and fermentable, I went by taste on the beta amylase rest. It rested long and low as I held in for 90 minutes at 60ºC. I want to see how sweet this stuff can get.

I suspect that the malt could have been modified more or I did something to disable some of the enzymes during kilning. More things to try next time.

I found gobs of greyish suspended gloop that looks like cauliflower blobs (proteins?) would glom together when the my makeshift tun was undisturbed. I sparged and more sweet stuff came trickling out. The sparge took about 20 minutes for 5 litres. Maybe something was sticking a bit. Maybe over crush.

I boiled the sweet smelling wort for an 75 minutes. 15 minutes for scunge skimming and 60 minutes with hops in. I got a good hot break. I hopped it with 1/2 oz of Magnum pellets and 1/2 oz of Cascades at 45 minutes. When I chilled in the ice bath I could see more globs forming. Aerated and pitched with 1 package of re-hydrated Cooper's ale yeast. Total yield was just over 10 litres.

I have no idea what kind of beer this is going to be. I hoped to make something quite bitter and dry. Hopefully the yeast has the punch to take the FG down low. Staying away from the alpha amylase rest was the idea there. The color is very light and I suspect it will be quite a pale ale, probably more like a lager in looks.

All good fun. Considering that the unknown in my recipe is the malt, and making malt can be just as much an art as making beer. I'll let you know how it turns out. I expect to hear the airlock to be calling me soon.

This is truly 'seat of the pants' homebrewing in the Philippines.

Cheers!

Friday, March 30, 2007

Making Crystal Malt at Home

OK, What the heck is Crystal Malt?

Crystal malt is 'green' or undried malt that has been stewed in water at just the right temperature and time to get the amalyse enzymes to activate and convert some of the malt's starches into sugar. This stewing or mashing is exactly what happens in the mash tun when we are making a wort on brew day. By holding the temperature steady between 65 and 70ºC the enzymes come alive and start to work on the starch. After about 40 minutes, the malt is removed from the water (wort?) and dried to crystalize the sugars. After drying, the malt may be roasted to impart a variety of colors and flavors.

I was fortunate enough to stumble across Beeston Malting Company's description of Crystal Malt and gleaned the following procedure:
  • Air dry @50ºC for 5 minutes

  • Stew between 65 and 75ºC for 40 minutes

  • Air dry @80ºC for 40 minutes

  • Cure in oven @135ºC for 2 hours

  • Optionally, roast as desired


Mini-mashing the green maltHomestyle Crystal Malt
This is my homemade procedure with notes.

A quick air drying is pretty simple; just get it in the sun for 5 minutes. For the mini-mash I put the green malt in a pyrex mixing bowl and placed it in a pot of water. The water acts as a temperature regulator and has thermal inertia; so the temperature doesn't fluctuate so much.

I then brought the mini-mash temperature up to 70ºC and maintained it by adding boiling water from the kettle as the mash cooled. After 40 minutes I decanted the liquid and put the malt back in the sun to dry. The liquid tasted pretty starchy at this point, but has a slightly sweet taste when it cooled a bit.

I hope to have a roaster made for tomorrow.

Cheers and happy malting.

Dan

P.S. Today is HOT! 35ºC and strong breezes. It feels like a blast furnace in your face when you walk outside. Ahhh perfect for drying malt. :-)