Nottingham Question

[ThePickle512]

Does anyone know the teaspoon to gram conversion for measuring out 1 gram portions of Nottingham? My scale just flopped. Thanks!


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[pricelessbrewing]

Packet is 11g or .388 oz. So 1 packet contains 2.33 teaspoons. 1 tsp=1/8 oz. 2.33tsp=.3883 oz=11g.

1g=(7/3)/11=.212tsp. so a little less than 1/4tsp..

 

[stpug]

^^That's probably close enough but generally US volume to weight conversions are based on water weight, not dry Nottingham yeast weight

 

[pricelessbrewing]

I didn't use density as a factor particularly for that reason...

I used the 2 given knowns, mass (11g) and volume (.388oz). Compared oz to tsp, as both are volumes. then used the known ratio mass/volume given on the packet of yeast.

The lazy way as stpug thought I did, assuming water density at stp, would've just been .388 oz = .2328 tsp. (which is just a little more than 1/4 tsp). Either way, use about 1/4 tsp.

 

[ThePickle512]

Thanks. Eyeballed the last gallon strawberry apple and it blew the airlock off and strawberry purée went to the ceiling. Thanks again.


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[kingwood-kid]

I used the 2 given knowns, mass (11g) and volume (.388oz). Compared oz to tsp, as both are volumes.

I'm pretty sure ounces are a measure of weight. You know, since there are 16 of them in a pound. Fluid ounces are volume.

 

[pricelessbrewing]

I'm pretty sure ounces are a measure of weight. You know, since there are 16 of them in a pound. Fluid ounces are volume.

Technically the oz in 1/16 of a lb is called the ounce-force, and is force(weight) that is respective to the avoirdupois ounce. This is the common mass oz.

You're right though, I suppose there was an assumption in usinf fluid oz.

Alternatively, I guess you could measure the volume of an entire packet of yeast.
1 gram would be 1/11 of that.

Would be interested to know how far off it is from my assumption.

 

[ThePickle512]

Well, tried just a hair under 1/4 tsp. If it explodes I'll tell you.


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[ThePickle512]

Also, if you sterilize the hydrometer, can you just lower it into the gallon jugs instead of using a tube? Seems wasteful especially when you are experimenting.


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[pricelessbrewing]

Yup. Just make sure it's sanitized (starsan).

(Sterilize and sanitize are different). But yes.