Wash the kale thoroughly and cook for 5 minutes in boiling salted water. Pour the cabbage onto a sieve, rinse under cold water and drain. Cut the cabbage into strips. Peel shallots and cut into slices. Cut bacon into small cubes.
Peel pineapple and cut out the stalk. Cut the fruit flesh into pieces. Clean, wash and possibly halve the tomatoes. Leave the bacon in a pan and take it out. Add oil to the frying fat and heat. Steam shallots in it until translucent. Deglaze with 4 tablespoons of water and vinegar. Season to taste with salt, pepper and sugar. Fold in tomatoes and pineapple.
Steam shallots in it until translucent. Deglaze with 4 tablespoons of water and vinegar. Season to taste with salt, pepper and sugar. Fold in tomatoes and pineapple. Mix all ingredients together and allow to soak well. Arrange kale salad on a plate and serve