Purpose:

For the provision of "dry hop" aroma post-fermentation and "late hop" aroma by addition to kettle or whirlpool.

Description:

Yellow, viscous or partially crystalline extract. Produced by limited extraction of hops with liquid CO2.

Analysis:

Analysis of the extract will be dependent upon the hop variety and its source. For hops processed on a tolling basis, yield of oil into the extract will be >80% and, typically >85-90%. Extraction of alpha acids will be <30% and, typically <15-20%. The hop powder remaining after extraction, containing the majority of the alpha acids can be:-

a.

Pelletised directly and used for kettle bittering.

b.

Blended and pelletised with other hops according to Customer requirements.

c.

Totally extracted to produce Pure Resin Extract. The Pure Resin Extract may be further processed into isomerised products.

Packaging:

Sealed, lacquered (food grade) cans of 1 kilo nett weight. Packaging can be arranged so that each container contains a specified quantity of hop oil.

Product Use:

When used to impart "late hop" character oil rich extract may be used "as is". We therefore suggest:-

a.

Suspending opened cans in a basket into the kettle as near to the end of boil as is practicable.

b.

As per a) but suspending cans in the whirlpool.

c.

Pump the oil rich extract into a hot wort transfer pipe/line over as large a volume as possible.

When used to impart "dry hop" aroma , because CO2 Oil Rich Extract is not readily soluble in fermented beer "as is" it must be dissolved or dispersed in a suitable carrier before dosing post-fermentation. We therefore suggest:-.

a.

Dissolution into liquid CO2 and injection into flowing beer.

b.

Emulsification using food grade emulsifiers. The aqueous emulsion is then metered into flowing beer.

c.

Using an approved solvent e.g. food grade ethanol.

For "dry hop" character addition of CO₂ Oil Rich Extract will normally be in the range 0.5 ppm - 3.0 ppm of hop oil, dependent upon the point of addition, characteristics of the base beer as well as the intensity of aroma and taste required.

Storage:

Preferably store unopened containers in a cool place. Partly used containers should be consumed as quickly as is practicable.

Safety:

No known health hazard in normal use. Non toxic in normal use. If material comes into contact with skin, wash off with soap and water. In the case of eye contamination, irrigate with plenty of water. If symptoms persist, seek further medical attention as necessary. Spilled material should be scooped up and the residue removed with hot water and detergent. Hop extract is combustible.