I tried to put 3 Gold Mardi Gras necklaces in the cooking basin, and instead got a Purple and Gold Mardi Gras Necklace containing 2 purple and 1 gold. I tried redoing it twice but got the same thing, both by leaving and coming back, and also by clicking the "back" button and trying again.
I tried collecting it anyway and it won't collect, but instead gives me back the three Gold necklaces.