I bought a poly whisk at the dollar store. I use loaf molds. I poured most of my soap into the molds at light trace, then added my cocoa and EO's to the remaining soap in the pot, stick blended and stirred it just until mixed, poured back and forth into the soap in the molds in long lines. Then I took my whisk, stuck it into the soap and keeping it in that one spot, twirled the whisk and lifted straight out. It made some really cool flowery designs. I also swirled back and forth in another batch using the whisk. I haven't attempted swirling in more that one color yet:/