Half and half is simply half whole milk and half cream. In the UK, they call it half cream. According The Kitchn, half and half typically has a 10 to 12 percent fat content, which, it stands to reason, means it's less fatty than cream and fattier than milk.
Dogs can eat peas safely. Peas are a good source of potassium, zinc, iron and several vitamins. Depending on the size of the dog, 1 or 2 tablespoons of peas is recommended. The dietary fiber in peas also helps overweight dogs feel full thereby reducing the dog's intake.
Peas provide our dogs with Potassium, Thiamin, and Phosphorous amongst other nutrition factors. Peas are safe for dogs. Carrots, and even rice nicely complement them. What you should do however is, puree or cook the peas and carrots so your dog can benefit from the nutrients in them. Without cooking the peas and carrots, your dog cannot break down the cellulose in the veggies.