This week sees Jamie showing how to have the perfect barbecue. He also shows how to make a perfect marinade.

Jamie's garden is bursting with tomatoes of every size, shape and colour. The freshness and vibrancy of the dishes Jamie makes leaves you in no doubt that growing your own tomatoes is a must in any garden, large or small. Jamie's tomato salad looks unbelievably sumptuous and the fusilli with salsa rossa cruda is knockout. Oven-baked sausage ragu is simple and rustic, and a beautiful pale pink tomato and vodka consommé top and tails the show, and is a treat for Brian the gardener.

This week Jamie prepares some meals using courgettes.

Jamie shows how easy it is to grow vegetables and fruit in your own back garden.

Under-rated members of the allium family take centre-stage: that's onions, garlic and leeks. Jamie pulls up some of his first onions of the year and makes a crisp and fresh cheese and onion salad. Then he uses red onions in an onion and potato al forno with tender roast pork.

Purple, white and gold carrots, pink and white striped beetroots. The garden throws up a rainbow-coloured variety of beautiful carrots and beets that form the basis of Jamie's recipes in this programme. Jamie makes the juiciest pork chop with roasted carrots and beets, shows carrots at their raw best in an Indian carrot salad, and makes an exciting dish with foil-roasted smoked beetroots, beef and a cottage cheese dressing.

Everyone loves potatoes and Jamie is no exception. He enthuses about these underground jewels and makes the perfect potato salad using freshly dug wonderful new potatoes at their best. Jamie excitedly investigates what lies beneath the soil with gardener Brian, and the purple potatoes they uncover are amazing.

This week Jamie creates a pork goulash and a smoked salmon dish.

Jamie makes a risotto, brushetta and stroganoff using wild mushrooms.

When he is invited out on a shoot Jamie takes a look at game birds used in cooking.

Of course Jamie's talking about pumpkins and squash, and his garden has a bumper crop of fascinating varieties, shapes, colours and textures. Jamie takes them to the kitchen and makes a mouth-watering warm winter salad of roast duck and pumpkin with an Asian-style dressing. Next up is a hearty winter pumpkin soup, followed by some delicate pumpkin fairy cakes.

From Italian leaves to roots and hardy herbs, a quick trip round Jamie's veg patch produces an array of colourful ingredients to make inspired winter salads.