Sweet and sour bean sauce with potatoes

1. 

beans 12.25 oz (350 g) • water • salt

Soak the beans in cold water the day before cooking. Pour the water, pour new one and boil the beans until soft with a little salt. Strain.

2. 

You can also use sterilized beans, with a net weight of 750 g. Before use, strain and rinse.

3. 

potatoes 1.7 lb (750 g) • water 1.05 quart (1000 ml) • salt 1 tsp

Clean the potatoes, wash, cut in small cubes and cook in water with salt and bay leaf.

4. 

sugar granulated 3 tsp

Add beans and sugar to the potatoes.

5. 

whole milk 3.5% 2.1 cup (500 ml) • all-purpose flour / plain flour 3 tbsp

Mix the flour in the milk.

6. 

whipping cream (30-33% fat) ¾ cup (200 ml)

Pour the mixture into the soup and cook. Add cream.

7. 

vinegar 2 tbsp • sugar granulated • salt • unsalted butter 1.75 oz (50 g)

Remove the sauce from the heat, season with boiled vinegar or a little more sugar and salt. Then, mix in the butter.