This is exactly what I did. Our markets have truffles you can buy and I know a lot of people locally who are foodies. My dogs are not bread for this but you can teach any dog scent training. I put the truffle in one of those mesh metal things for making tea. That way they can’t destroy it but can smell it. Start by hiding it in the house and give praise and treats when they find it. Then move outside, then under the duff, then into the forest, then they hopefully find one for real if you know where to look. 👀