No bake cheesecake

Bahan-bahan (12 porsi)

• 200 g /7 oz digestive biscuits ((13 pieces, 1 2/3 cups crumbs), or other plain biscuits/cookies)
• 90 g (6 tbsp) unsalted butter, melted
• 1/2 tsp cinnamon powder ((optional))
• 1 tbsp brown sugar
• Pinch of salt
• 2 1/4 tsp (9 g) gelatin powder (, unflavoured (Note 2))
• 2 tbsp cold tap water
• 1 cup thickened or heavy cream (, or any whipping cream, FRIDGE COLD (Note 3))
• 500 g / 16 oz cream cheese block ((not tub), well softened at room temperature (Note 4))
• 3/4 cup caster sugar / superfine sugar ((Note 5))
• 1 tsp vanilla extract
• 1 tbsp lemon juice ((not critical, can do without))
• 6 strawberries (, halved (plus extra for serving))
• Whipped cream ((half batch for decorating, or full batch for extra to serving on side))