Easter treat: find out what makes white chocolate white

Food Unwrapped Gets Chocolatey (Channel 4, 7.30pm)

TO celebrate Easter – the most chocolatey time of the year – this special episode looks back at favourite chocolate-based investigations from the Food Unwrapped archives. Kate Quilton heads to a cocoa co-operative in Ghana to get to grips with chocolate’s raw ingredient. She uncovers the truth behind reports that dark chocolate can be good for your health. Matt Tebbutt heads to one of the UK’s largest chocolate factories to find out what makes white chocolate white. He also gets the inside story on After Eights – how does the minty fondant stay gooey in the middle?

World’s Most Scenic River Journeys

World’s Most Scenic River Journeys (C5, 8pm)

Bill Nighy narrates this documentary series, telling the stories of six epic river journeys via the fascinating characters who live and work on and around the water. We begin on the attraction-packed Niagara, the border river between Canada and the United States, before arriving at the world-famous Niagara Falls. Next we pass through a stunning gorge carved out of rock by the last ice age, and hear stories about Indigenous traders, a shipwreck rescue, and daredevil wire-walkers. Then for our final leg, we’ll drift past some of North America’s most picturesque small towns and sample the local delicacy – ice wine.

Grayson’s Art Club

Grayson’s Art Club (C4, 8pm)

For the last episode of the series, Grayson and Philippa Perry welcome illusionist Derren Brown, who talks about his love of painting. Taskmaster comedian Alex Horne creates a unique response to the theme of the week – Travel. Plus, Art Club meets Liverpudlian artist Chila Kumari Singh Burman, whose recent installation transformed the front of Tate Britain into a celebration of bright lights and swirling colour. Finally, Grayson and Derren choose their favourite artworks from this week’s submissions, before some of the guests from throughout the series return for a heart-warming finale.

Churchill The Long Grass

Churchill: The Long Grass (C5, 9pm)

Winston Churchill’s early career in politics was far from smooth. As a young MP, his rise through the ranks was meteoric – but it soon came crashing down. Come the outbreak of the First World War, 40-year-old Churchill clawed his way up to become Britain’s First Lord of the Admiralty. But when he was blamed for one of the biggest disasters in British military history at Gallipoli, his reputation was left in tatters. However, Churchill, as he would do so many times, fought back. He made the dramatic decision to serve his country as an army officer in the trenches on the Western Front, eventually winning over his fellow soldiers and returning a war hero. Now all he had to do was convince PM David Lloyd George to give him a place in his Cabinet.

Monty Don

Gardeners’ World Easter Special (BBC2, 9pm)

Good Friday is still seen by some people to be the start of the gardening year, and the Easter weekend tends to be one of the busiest in the calendar for nurseries and garden centres. With that in mind, Monty Don looks ahead to the summer months, planting out sweet peas, as well as advising on mulches for borders. Meanwhile, Carol Klein is at RHS Rosemoor in Devon, revelling in the floral sensations of spring, and there’s a look back at how Nick Bailey transformed his own garden into a colourful and productive oasis in just one season. Plus, presenter JJ Chalmers on how the natural world helped with his rehabilitation. Finally, there is a trip to a daffodil show and more visits to viewers’ gardens.

Sharon Stone

The Graham Norton Show (BBC1, regions vary)

Graham is joined by Basic Instinct and Casino star Sharon Stone, who talks about her memoir The Beauty of Living Twice which chronicles her efforts to rebuild her life after suffering a massive stroke. Also tonight, Hollywood greats Octavia Spencer and Melissa McCarthy discuss working together in superhero comedy Thunder Force, while David Schwimmer and Nick Mohammed – co-stars of Sky One’s workplace comedy Intelligence – drop by. Comedian Frank Skinner and star of RuPaul’s Drag Race Michelle Visage discuss their latest projects, while Steps perform Heartbreak in This City.