Silk screening
Posted in: Tech Help, Tips, Tricks, Techniques
Thanks for the replies everyone.Am doing my "homework" right now!
For what its worth, you can often find 'specification sheets' for callebaut products online. Just search for "product name specification".
The spec sheet will often include both the % cocoa mass and the % non-fat cocoa solids.
You can use these spec sheets to double check your calculation technique for 'extracting' the relevant info from ordinary nutrition information.
Finally, several of the Callebaut dark chocolates are made with cocoa mass, defatted cocoa powder, sugar, vanilla, lecithin. These are not high end single origin chocolates, rather middle of the road mass market ingredients. These chocolates are very, very thick when melted and have relatively poor texture, but are quite nice for doing things like make ganache where the extra flavor hit per unit fat is a benefit.
-Jon
Also, in your example you have "1. 56g total wt". But the nutritional information is based on a serving size. For Dagoba bars the whole bar is usually 56g but the serving size may only be half of that. Was your example using Serving Size from the nutritional info or the total size of the bar?
Drew,
Thanks for the reply but I think you missed a crucial point that wasn't made clearly enough in my OP. You can only do this with dark chocolate that has no other inclusions such as milk powder, fruit, nibs, or nuts added.
The only 37% bars I have ever seen are milk chocolate bars, so they have milk powder and other ingredients added, including some that have fat in them. You CANNOT use this method with any bars that have inclusions. Does that make sense?
A better explanation is below:
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Its actually pretty easy to figure out the percentage of cocoa butter in a chocolate bar. Note, though, that you can only do this with dark chocolate that has no other inclusions such as milk powder, fruit, nibs, or nuts added. You also have to have a package with the nutritional information that includes the fat content (in grams) because the fat is from cocoa butter. Follow these steps:
1) Note the serving size (in g)
2) Calculate the amount of cacao per serving by using the cacao percentage. Keep in mind that the total serving size = cacao + sugar + (optional other ingredients, 1-2%).
The amount of cacao = serving size X cacao percentage (as a decimal number).
Ex- a 40 g serving X .75 = 30 g cacao.
3) Note the Total Fat (in g)
4) Divide Total Fat by Cacao Amount in step 2. This gives you a decimal. Then convert this decimal number to a percentage (i.e. 0.52 is 52%) and then you have the cocoa butter percentage.
An example, Fresco Dominican Republic 223, 72%:
1) Serving size = 45 g
2) Cacao percentage = .72
3) Weight of cacao = 45 x .72 = 32.4
4) Fat content = 16.2 g
5) 16.2/32.4 = .50, so 50% cocoa butter
ChocoFiles-
I think that you are incorrect not in the mathematics but in the assumptions. Let me follow your example with a lower % bar
Dagoba 37%:
1. 56g total wt
2. 20g fat wt / 21g cacao wt
3. 36% fat
4. 37%-36% = 1% or 97% butter
I can show you many more examples like this. In fact some 30% bars have a negative cacao %.
I am a chemical engineer and I did all of this before I posted my first thread-- which included my assumptions on what cacao% means. I also attached a rough spreadsheet which calculated weight percentages of each constituent. I believe that the OP incorrectly assumes that %cacao is without fat. I made a bold assumption on the fat% and when entered into my spreadsheet shows a wide variation of dry cacao and a very low variation on fat% which makes sense to me. It shows that the texture is well agreed upon and the % cacao is inversely related to sugar based on personal taste preference.