Making *Crystals* BROO!

First as a group we got a beaker and put distilled water in it, at no precise amount. Then we let it bowl over a mini heating stove thing, and once it was very bubbly we added potassium. My trick was to put not too much but not that little in and stir til it evaporated and then keep the process going. Soon enough we just stopped and class was over. We walked into class the next day with a beaker full of crystals not more than half way up but close. With all these crystals each one of us in the group tried to break up big crystals to tie up to a string. Then it was a self lab, I got my crystal and did the same process to a beaker but did not but the crystal in yet. Also I cold died my water with yellow and a few drops of red making it a light orange or a dark yellow. After putting as much dissolved potassium as I wanted I let the substance cool down and then later on added my crystal. Then next day my crystal got bigger and that day I did the same process . .  The last day came and this is what my crystal looked like: