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Grainfather Blog - Week 145: Serving the perfect pint - Part 2 Draught Beer

By Grainfather - All Grain Brewing 21/02/2018 10:40 Comments

 

Over the festive season, our resident brewer spent a lot of his holiday trying different beers at different venues. He noticed a number of people (family, friends and pub staff) couldn't serve a pint of beer correctly. This lead us to write a series of weekly mashes that will talk about ‘serving the perfect pint’. 

Draught Beer

Pouring beer from a draught system is an art form, the proper serving of draught beer is intended to have a “controlled” release of carbonation to give a better tasting and sensory experience. The evolution of CO2 gas during pouring builds the foam head and releases desirable flavours and aromas.

Once you have selected the proper glassware for the beer style, you are pouring and have inspected it for cleanliness, position the glass underneath the tap just below the faucet nozzle.

 

Technique

1. Hold the glass at a 45º angle, open faucet fully.

2. Gradually tilt glass upright once the beer has reached the halfway point in the glass.

3. Pour beer straight down into the glass, working the glass to form a  2.5 cm or one-inch collar of foam (“head”). The Head is for visual appeal as well as carbonation release.

4. Close faucet quickly to avoid wasteful overflow.

5. Serve beer immediately  

Nitrogen

For nitrogen draught pours, place the appropriate glass directly underneath the tap, resting on the drain tray. Begin by pulling the nitrogen tap forward and allowing the first third of the total pour size to pour into the glass. Close the tap and allow the beer to rest until it has settled and the collar of foam has collapsed to less than 2.5 cm or one inch. Pour the next third of the volume and again close the tap and rest the beer. Finish with the final third of the pour size, which should result in a thick, creamy one-inch collar of foam. As with CO2 draught pours, serve the beer immediately.

Cask

Traditionally, cask beer is matured by secondary fermentation in the container from which it is dispensed (instead of maturing in a tank and being transferred to a keg, can or bottle). Cask beer is usually unfiltered, unpasteurized and still has active yeast. It is also less carbonated and commonly served at a temperature of 7-120C ( 45- 55°F)

There are two standard methods of dispensing beer from a cask: through the use of a beer engine or a gravity-forced dispensing system. Purists insist on no addition of CO2, but some modern dispensing systems do employ a blanket of CO2 inside the headspace of the cask.

Place the appropriate glass under the cask engine and bring the glass all the way up until the spray nozzle touches the bottom of the glass. Begin to pull the engine handle toward you. As beer fills the glass, lower the glass to keep the nozzle at the level of the top of the beer in the glass. Once you have pulled the total pour size into the glass, pull the glass straight down from the nozzle and serve immediately. Return to the cask engine after each pour and wipe down the nozzle with a sanitised towel.

 

Pouring Hygiene

  • Unless it is a beer engine (hand pull), In no instance should the faucet nozzle touch the inside of the glass!

- Nozzles can cause glassware breakage; nozzles can transfer contamination from dried beer to glassware.

  • Unless it is a beer engine (hand pull), In no instance should the faucet nozzle become immersed in the consumer’s beer.

- Nozzles dipped in beer become a breeding ground for microorganisms.

  • Importance of one-inch foam collar:

- While retailers struggle with customers who demand their beer “filled to the rim,” brewers prefer beer poured with about a one-inch collar of foam (“head”).

- A one-inch head maximises retailer profit, as the foam is 25% beer. Filling glass to the rim is over-pouring.

- A proper head on a draught beer delivers the total sensory experience, including the following sensory benefits:

  • Visual appeal of a good pour
  • Aromatic volatiles in beer released
  • Palate-cleansing effect of carbonation enhanced 

 

See part 3 of serving the perfect pint in next week’s mash!

Post Comments

Grainfather Recipes

posted on 22/02/2018 15:25
Hi Eric,
The statement is not referring to deceptive practices of the retailer. It is referring to when there are no markings on the glass for the appropriate fill, for unmarked glasses, the appropriate fill is to 1inch below the rim of the glass. This is the same as if you are served a glass of beer with a pint marking on the glass and yet the top of the liquid beer is above the marked line then the retailer is losing money on each beer served. So to maximise profit (this is in no way a loss to the patron) the correct glassware should be used and filled to the correct level.

Eric James

posted on 22/02/2018 12:15
"- While retailers struggle with customers who demand their beer “filled to the rim,” brewers prefer beer poured with about a one-inch collar of foam (“head”).
- A one-inch head maximises retailer profit, as the foam is 25% beer. Filling glass to the rim is over-pouring."
You are advocating for a deceptive practice at best and theft from the consumer at worst! If it is offered as a "pint" it should be a liquid pint. Cask beer should be filled very near to the rim in any case. In Germany, and some other places on the continent, glassware has a labeled volume mark well below the rim, leaving room for the proper head. That is the way it should be done. A decent publican will top-up a short pour. And by short pour I mean ANYTHING less than what the chalk board or menu describes as the measure you are paying for.

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