I¹ve just received a magisterial class of emulsifiers by a couple of Phd¹s
on that precise subject (the ones I told you before that invented
Orimulsion, the heavy oil and water fuel-oil substitute). Having presented
myself to them as the lowest of the low layman in the area (and with a low
IQ as a garnish) I received some pretty interesting data in the simplest
terms: It seems there¹s basically two types of emulsifiers, ones that are
meant to to be used in a fat in water context and others in a water in fat
context; it all depends of the fat to water ratio. In the case of
chocolate (the solid one that comes in bars) that¹s a water in fat scenario,
and in that case you must use an emulsifier which has more water than fat
affinity, like lecithin. In the case of a fat based liquor (like my
chocolate liquor) the right emulsifier is one that exhibits more fat
affinity (the recipe calls for 600 ml of H2O per liter), and the
best/cheapest/stablest in the context is Polysorbate 60. In the ice-cream
and bakery industries there¹s a widespread use of a brother of this
substance, Polysorbate 80, but this emulsifier serves other conditions (or
so I¹m told).
Sodium caseinate applies, almost exclusively, to liquors whose fat content
is milk fat (cream) based.
They told me that the usage threshold of soy lecithin in a liquid scenario
like mine is like 300-700 ppm and that by using 3 ml per liter I was using
about 60.000 ppm! (and it didn¹t work, by the way, it did separate at less
than 24 hours).
It happens that they had a bucket full of the stuff I needed (looks exactly
like vaseline) and they gave me a generous helping to test on a range of 0,5
to 3 grams per liter, to keep things in a conservative side. Polysorbate 60
costs like 25% of what soy lecithin does in our local market.
They emphasized the role of mixing and the sequence in which you introduce
the elements. If you¹re using the fat in water type of emulsifiers you
should start by mixing it with the water and watery ingredients and add the
fat substances last (if using the other type, then by the inverse).
Agitation should be done by means that introduce the less air possible (told
me the hand blender was the best choice and that the vortex implied in
blender mixing was no good because of that). Also told me that it should be
mixed for a period of no less than 5 minutes.
Thanks again to all that gave their advice. The final recipes I would
publish by the day past tomorrow to give time for tests in progress to give
their final verdict.
Colonia Tovar - Venezuela.
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