Lesson 7 - Mashing Technology SAQ
This lesson provides the opportunity for you to test yourself on the material covered in Lesson 6 on Mashing Technology and determine the level to which you have attained the expected outcomes.
SAQ Suggested Response - Q1
**Complete the table below by inserting the name of the pre-masher that best fits the category and justifying your choice.
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Attributes |
Pre-mashing Technology |
Justification |
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Best oxygen control |
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Worst oxygen control |
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Gentlest |
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Least gentle |
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Easiest to clean |
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Hardest to clean |
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Response:
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Attributes |
Pre-mashing Technology |
Justification |
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Best oxygen control |
Mechamasher |
The Mechamasher can be flooded with deoxygenated water before use and can deliver mash under a cushion of deoxygenated water to the base of the MCV. Wet milling is a very close second. |
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Worst oxygen control |
Steel’s masher |
The Steel’s masher is the only masher that knocks air into the mash as it hydrates it. |
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Gentlest |
Wet milling |
With wet milling, the mash is gently pumped to the bottom of the vessel directly after crushing, so there is minimal damage to the grist/mash. |
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Least gentle |
Steel’s masher |
Steels masher has the highest level of mechanical action and drops the mash from a height into the mashing vessel. |
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Easiest to clean |
Vortex |
The part of the vortex pre-masher that the grist flows through is just a hollow tube with a slot where the water comes out and then a curve to the side of the vessel after a concentric reducer. The surfaces are smooth, so easy to clean. A spray ball in the masher rinses this tube at the end of mashing in to make CIP easier. |
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Hardest to clean |
Steel’s masher |
Although there are more bits to clean in the Mechamasher, the whole of the unit can be flushed after use and filled with cleaning solution, so the Steel’s masher comes last again! The top part of the mixing cylinder in the Steel’s masher stays empty during mashing in but is splashed with mash which dries on. Because the end is fully open, it is not possible to flood during cleaning and rinsing, so it is more difficult to clean. |