Whip the condensed milk, cream stiffener and cream cheese with the whisk of the mixer for 2-3 minutes until creamy. Wash and clean 125 g strawberries. Pour into a mixing bowl with jam. Puree with a hand blender.
Alternately pour condensed milk cream and strawberry puree into a clean ice cream container (approx. 1.5 l capacity). Swirl with a fork in streaks. Smooth out and freeze covered for approx. 5 hours.
125 g strawberries wash, clean and cut into small pieces. Mix strawberries with lemon juice and sugar. Leave to stand for about 15 minutes.
Allow ice to thaw 5-10 minutes before serving. Cut into cubes of about 5 x 5 cm. Place 1 biscuit on each of four plates and spread with approx. 1 tsp. caramel spread. Place 1 strawberry cube on each plate.
Add the rest of the caramel spread. Cover with 1 biscuit each. Serve with marinated strawberries. Refreeze the rest of the ice cream (lasts at least 1 month).