Share 'go-to dark chocolate truffle recipe?'

Hi everyone, I've actually been out of commission for a while, in the process of slowly closing my business. But I had someone place a large order- 3000 truffles- and I need some help. I've been using truffle shells for a while now but this customer wants a larger truffle which means I have to hand-roll. I've had problems with dark choc ganaches in the past being too soft, so I was wondering if a…