Crust:
Nonstick vegetable oil spray (Tesco: £2.50)
3 1/2 dl fine digestives+rich tea biscuit crumbs (Tesco: 80p)
115 g unsalted butter, melted, cooled slightly (Tesco: 85p)
50 g sugar (Tesco or Waitrose: 69p)

Filling:
2 teaspoons powdered gelatine (Tesco or Waitrose: £1)
680 grams cream cheese, room temperature (Tesco: £1.95)
3.5 dl plain whole-milk Greek yogurt (Tesco: £1)
150 g sugar
2 teaspoons fresh lemon juice (Tesco: 30p)
1 teaspoon vanilla extract (Tesco: £1.30)
1/2 teaspoon sea salt (Tesco: 80p)

Pomegranate Syrup And Assembly:
4 3/4 dl flash-pasteurized pomegranate juice (Tesco: £2.89)
100 g sugar
2 tablespoons light corn syrup (Tesco: £1.18)
Pomegranate seeds (Tesco: £1)