Salted Caramel Chocolate Doughnuts

I always wanted to do a Doughnut tower. But how high can I get? Four, five or maybe even six depending on size. However, with my smaller home made chocolate doughnuts I decided to be safe and stay on level four. The salty bretzels are not helping with stability but are a very interesting addition in taste to the sweet caramel. That's all that matters. Yum.