Limited experience informs SWIM that:
1 the slower they grow, the larger they grow
2 significant fat/oil impurities impede large shard development somewhat
3 evapping yields gooier, less crystally product than freeze precip
So... re-X and cool
slowlybut
the master is here... enjoy!
L
"The first principle is that you must not fool yourself, and you are the easiest person to fool." Richard P. Feynman