10-Minute Microwave Jam

1. 1 Mixed berries (frozen)pack 300 g ≈ $3.50 180 g
2. 2 Sugarpack 1 kg ≈ $1.60 90 g
3. 3 Lemon≈ $4.70 per kg 10 g

Grey items are salt, spices and anything under 30 g per jar: you usually have them at home, so they are not in the jar price. Sugar, vinegar and oil from 30 g are counted.

Method

1. Thaw the frozen berries for 5 minutes at room temperature and transfer them to a deep microwave-safe bowl.

2. Add 90 g sugar² and 10 g lemon³ juice, then stir.

3. Microwave the bowl at full power, 800 W, for 3 minutes. Remove and stir.

4. Repeat heating for another 3 minutes, stir, then heat once more for 3 minutes. The mixture should become thick.

5. Transfer the jam to a clean 0.25 l jar, cool, and close with a lid.

6. Store in the refrigerator for up to 14 days.