Craig David swaps Miami pier for Southend as he rolls up his sleeves for a shift in the caff. Jamie Oliver takes Craig back to his childhood as he teaches him a traditional Caribbean chicken dish. Jamie also makes a roasted salmon and artichoke parcel. Jimmy Doherty builds a homemade dehydrator to help a teacher educate her class on nutrition and food waste. And Jamie and Jimmy look at a superfood right on their doorstep - seaweed.