We could all do with having Mary Berry in the kitchen over Christmas and New Year but here she is with some great advice on some of her best kitchen hacks and overleaf we have some of her delicious recipes to try out over the festive season.

Mary Berry has worked in the food industry for more than five decades and is always keen to keep learning. The 86-year-old’s new TV series and accompanying cookbook, Love To Cook, sees her get to grips with preserved lemons and white miso, and she’s intent on bringing home cooks along with her.

“I enjoy so much the teaching side,” says the food writer and presenter, adding that, “Every recipe is achievable. It’s not too many ingredients, and they’re the sort of recipes that your family will go through.”

Trained at Le Cordon Bleu and with aeons of experience to back her up, when you speak to her, Berry can’t help but share tips and tricks for making the most of your food – whether you buy it or grow it yourself.

Here’s a handful of her best hacks… Grow your own lemons – and prune that lemon tree Berry has a lemon tree she “cherishes” – but she does have an edge: “I look round at other people who’ve got lemon trees and they don’t prune it. I snip away at it in the summer in the growing season.

It’s a lovely shape and very dense now, wonderful green. I feed it and it’s in a very sunny spot.” It’s going into the greenhouse wrapped up for winter, but she says “the other thing you have to do is to pick the fruit. If you leave all the fruit on it, it doesn’t bother to turn the flowers into fruit.”

Sow potatoes in big buckets In the new series, Berry meets a celebrated allotmenteer, Terry, who taught her a few things about growing potatoes. “He grew potatoes, as I do, in big plastic bins,” she explains. “I said, ‘I’m waiting for the flowers on my potatoes’. He said, ‘You don’t want to do that, you want to put your hand down the side and see whether there’s any’. So he put his hand down the side of his potatoes, no flowers on them, and up came little tiny potatoes and it was beautiful.”

Multiply your supermarket basil Berry gets through a lot of basil in her kitchen – and she doesn’t keep it in the fridge, because it likes to be warm. “If you don’t want to sow seeds, you can buy a pot in your supermarket and then nip out the tops, divide them up and spread them out in the garden,” she recommends. “They’ll grow well, or spread them out on the windowsill, so you’ve got more plants.”

Make fresh herbs last longer Berry grows her own tarragon, sage, basil and rosemary, and is adept at keeping them fresh. “I put my herbs in a jug or a jam jar and slip a poly bag over the top and keep them in the fridge,” she explains.

“They’ll keep very well. Parsley, whether you grow flat-leaf or ordinary parsley, doesn't matter, they’re a very similar flavour – they will keep well if you’ve put the stalks in water.”

The secret to sparkling roasting tins Washing up as she goes is classic Mary Berry, but if you’ve got a pan that really won’t shine, she has a back up plan. “If you’ve got a really burnt dish that you’ve been roasting in, put a dishwasher tablet in it and pour boiling water on it and leave it overnight. You’ll be amazed how easily it comes off.”

Why cauliflower is the best bargain Berry is a particular fan of cauliflower: “A cauliflower to me is such a good buy. You can roast it, cut thick slices from it, you can fry it, and any of the bits that fall off round the outside, you can stir-fry.”

How to cut waste

Fully aware of the need to reduce kitchen waste, Berry makes “compost from everything that’s not cooked”, she says, and she’s also a big fan of using reusable plastic boxes that have often had something else in them. “I then wash them and use them again. I use beeswax paper for wrapping, it clings to itself and you can use it again.”

On getting the right level of heat

Everyone knows what spice level suits them. “My young [family] like chillies so that they jump when they eat them,” says Berry. “In the recipes, I always suggest a small amount. And if you want to add more, do. And spices – I love spices, I love curries. But I think you have to temper them with your family's taste.”

Mary Berrys Sticky Soy And Ginger Pork Fillet

“Roasting a whole fillet is so quick to do and this delicious marinade makes it easy and full of flavour. There is enough marinade here for a sauce, too. Make sure you heat it well before pouring over the cooked pork.”

(SERVES 4)

INGREDIENTS:

◆ 1 large pork fillet (600g/1lb 6oz)

◆ 4 spring onions, finely shredded into long, thin strips

◆ 1 red chilli, deseeded and thinly sliced

◆ 2tbsp chopped coriander

FOR THE MARINADE:

◆ 4cm (1½in) fresh root ginger, peeled and grated

◆ 2 garlic cloves, crushed

◆ 4tbsp soy sauce

◆ 2tbsp sweet chilli sauce

◆ 3tbsp honey

METHOD:

➊ To make the marinade, measure all the ingredients into a dish and mix well.

➋ Trim any sinew from the fillet and discard. Sit the fillet in the marinade, season with salt and black pepper and turn to coat until all the fillet is covered. Leave to marinate for a few hours in the fridge.

➌ Preheat the oven to 220°C/200°C fan/Gas 7 and line a small roasting tin with non-stick baking paper.

➍ Remove the fillet from the marinade (reserving the marinade to use later) and sit it in the roasting tin. Roast in the oven for 25–30 minutes, until golden brown and cooked through.

➎ Remove the fillet from the roasting tin and set aside on a board to rest. Cover with foil and leave for five minutes before carving.

➏ Place the reserved marinade in a small saucepan and place over a medium heat. Bring to a simmer, stirring occasionally.

➐ Carve the pork into slices and arrange on a platter. Pour the hot marinade over the top and scatter with the spring onions, red chilli and coriander. Serve with rice or noodles.

BERRY’S TIPS

◆ Can be marinated up to eight hours ahead.

If serving cold, it can be roasted up to four hours ahead.

◆ Freezes well raw in the marinade.

Mary Berry’s Lemon And Lime Meringue Tranche Pie

“Such a favourite dessert for so many, the added lime gives it an extra zing,” says Mary Berry. “We have made this in a tranche tin but it would also fi t in a deep 23cm (9in) round loose-bottomed flan tin.”

SERVES 8-10)

INGREDIENTS:

FOR THE SWEET SHORTCRUST PASTRY:

◆ 150g (5oz) plain flour

◆ 90g (3oz) butter, cubed

◆ 2tbsp icing sugar

◆ 1 egg

FOR THE FILLING:

◆ 30g (1oz) cornflour

◆ Finely grated zest and juice of 1 large lemon

◆ Finely grated zest and juice of 1 large lime

◆ 50g (2oz) caster sugar

◆ 3 egg yolks

FOR THE MERINGUE TOPPING:

◆ 3 egg whites

◆ 175g (6oz) caster sugar

◆ You will need a 12 × 36 × 2.5cm (4. × 14. ×

1in) rectangular loose-bottomed fluted tin, or tranche tin.

METHOD:

➊ To make the pastry, measure the flour, butter and sugar into a food processor. Whiz until the mixture resembles fi ne breadcrumbs.

Add the egg and whiz again until the dough comes together to form a ball. Turn out onto a lightly floured work surface and roll thinly.

Carefully line the tin and press the pastry into the sides. Prick the base with a fork and place in the fridge to chill for 30 minutes.

➋ Preheat the oven to 200°C/180°C fan/Gas 6 and place a baking tray in the oven to get very hot.

➌ Line the pastry case with non-stick baking paper, add baking beans, place on the hot baking tray and bake for 15 minutes. Remove the beans and paper and bake for another five minutes, or until the pastry is crisp and lightly golden. Leave to cool. Reduce the oven temperature to 150°C/130°C fan/Gas 2.

➍ To make the filling, measure the cornflour and 200ml (1/3 pint) water into a pan and whisk to combine. Add the zest and juice of the lemon and lime and place over a medium heat. Continue to whisk until the mixture has boiled and thickened. Remove from the heat, add the sugar and egg yolks and whisk again.

Pour into the pastry case and place in the fridge to chill.

➏ Meanwhile, make the meringue topping. Place the egg whites in a large bowl and whisk using an electric whisk, until stiff .

Add the sugar a little at a time, whisking at full speed, until you have a shiny, glossy meringue. Spoon into a piping bag fitted with a plain one and a half centimetre (5 ⁄ 8in) nozzle and pipe even blobs over the surface of the chilled custard in a neat pattern. If you don’t have a piping bag, you can use two dessert spoons.

➏ Bake in the oven for 35–40 minutes, until pale golden on top and fi rm to touch. Leave to cool in the tin for 15 minutes before removing from the tin. Serve warm with pouring cream.

BERRY’S TIPS

◆ Can be made up to eight hours ahead and reheated gently to serve.

◆ Not for freezing.

◆ Do not serve the pie hot, as the filling may be a bit soft and will spill out of the pastry case.

MARY BERRY’S Nordic Seed And Nut Loaf

“This feels so healthy and is gluten-free. Chia seeds are an edible seed from a plant native to Mexico and related to the mint family. They are very high in fibre and have health benefits.

This recipe was inspired by food chats with my very lovely agent Joanna Kaye. In lockdown, phone chats about lunch were imperative. Joanna had eaten a delicious-sounding seeded bread, and from that chat this recipe grew – we all love it! Swap the dates for cranberries or figs, if liked, using the same amount. A delicious combination of a close firm texture and nutty flavour, this is great spread with butter and served with gravadlax or smoked salmon, charcuterie, cheese and pickles, or as a base for canapés.”

(MAKES 1 × 900G (2LB) LOAF)

INGREDIENTS:

◆ Butter or oil, for greasing

◆ 4 large eggs

◆ 3tbsp olive oil

◆ 50g (2oz) so dried dates, finely chopped

◆ 5g (1/8oz) sea salt

◆ 75g (3oz) pumpkin seeds

◆ 75g (3oz) sunflower seeds

◆ 150g (5oz) pecan nuts, finely chopped

◆ 50g (2oz) sesame seeds

◆ 3tbsp chia seeds

METHOD:

➊ Preheat the oven to 180°C/160°C fan/Gas

4. Grease the base and sides of a 900g (2lb) loaf tin and line with non-stick baking paper.

➋ Break the eggs into a bowl and beat with a fork until combined. Add the remaining ingredients and mix well using a wooden spoon.

➌ Pour the mixture into the loaf tin and bake for 45–50 minutes, until golden brown and fi rm in the centre.

➎ Leave to cool in the tin for five minutes, then loosen the edges with a palette knife, remove from the tin and place on a wire rack to cool completely.

➎ Slice into thin slices to serve.

BERRY’S TIPS

◆ Can be made up to a day before.

◆ Freezes well.

Love To Cook by Mary Berry is published by BBC Books. Photography by Laura Edwards. Available now.