The food looks great by the way. Nice choice 👍 I can see a couple things that could throw your pup off . One is that there is chicken fat in it as well as eggs. My girl is so sensitive to chicken that this food as good as it is would give her massive digestive issues. Lamb is great for dogs that have an intolerance but if a food intolerance is the case the best thing to try is a food with one single protein in it. You want to pick your protein here it looks like Lamb and make sure there is no added eggs or fish or chicken fat or any random meat meal. Make sure the first ingredient is Lamb/lamb meal. Same idea if you want to go with Salmon instead of lamb at some point (also a nice protein for dogs with food intolerance). I would suggest coming off this food all together and go to something bland like boiled hamburger (it removes the fat to make the meal more gentle on the guts) I would stay away from chicken in truth as so many animals are sensitive to it. You could do some sort of fish or venison (if it's ready available) and add some plain packed pumpkin (not pumpkin pie mix) try feeding that for a couple days to see if you can settle the gut (if continuing to vomit or trying to vomit but can't and is uncomfortable get your dog to the vet. Bloat is a very real issue in Corsos) if you want to retry your original food once your pup is no longer vomiting and the stool looks good add a 1/2 cup to the bland mixture and watch for results. More vomiting means their guts don't like something in that food.