Keeping chocolate in temper
Posted in: Tech Help, Tips, Tricks, Techniques
I am new to this forum. I have done quite a bit of reading and this website has been very helpful.
Using fermented cacao beans from trees that I grew 4+ years ago, a small horizontal rotary roaster, a drill press modified to run a vertical ball mill at 60 rpm; and, a water-jacketed wheel tempering machine (which I designed as these equipment would be difficult to acquire/purchase overseas from the Philippines where I am situated), I am able to produce nice-looking, fine-textured and good-tasting 70% Cacao chocolates.
My chocolates contain ~60% beans, ~10% cocoa butter, ~30% raw washed sugar, ~1% vanilla powder and ~1% lecithin. The nibs are milled for about 36 hrs (50+50% of the sugar is added at 12 & 16 hrs, 50+50% cocoa butter at 20 & 24 hrs, 1% vanilla powder at 24 hrs; and 1% lecithin at 35 hrs.) After solidifying the liqour in bread loaf pans atroom temperature for 3 days ( Does it qualify as couverture at this stage? ), it is chopped into small pieces and melted in the tempering machine. Over a 1hr and 15 minute period, the chocolate is heated to 122degF, cooled-down to 88 degF (by initially replacing heated jacket water with 86degF tap water and with 84degF ICED tap water) and finally warmed again to raise chocolate temperature to ~90degF.
I use the 122degF, 88degF and 90degF temperatures as they were specified in the Tempering (Dark) Chocolate video at Tempering Chocolate . Admittedly, I am unable to cool-down to 80degF as specified in the video (as that would require very cold or chilled water). Are these the correct temperatures for tempering 70% Cacao Bean chocolates? The use of iced or chilled water to cool-down before settling to the tempering temperature is not mentioned in this discussion thread. Is the use of iced or chilled water correct?
Despite the above attempts to temper, my chocolates do NOT have the snap of properly-tempered chocolates. They are dark colored but NOT as-dark-as commercially-sold dark chocolates. They also produce very fine white powder-like bloom on their surfaces after a few days. What am I doing wrong?
I look forward to everyone's feedback, comments and suggestions. Thank you in advance.

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