'2/3 cup of low-fat yogurt'
'1/4 cup of green scallion finely chopped'
'2 tablespoons of white wine vinegar'
'1 tablespoon of savoy leaves finely chopped'
'6 large sweet potatoes'
'1 egg yolk'
'Salt and black pepper to taste'
'To decorate'
'18 savoy leaves'
'Accessory'
'Aluminum foil'
'2/3 cup of low-fat yogurt'
'1/4 cup of green scallion finely chopped'
'2 tablespoons of white wine vinegar'
'1 tablespoon of savoy leaves finely chopped'
'6 large sweet potatoes'
'1 egg yolk'
'Salt and black pepper to taste'
'To decorate'
'18 savoy leaves'
'Accessory'
'Aluminum foil'
'1'
''Wash the sweet potato skins well and dry with paper towels
Make holes in them and wrap each one in a double layer of aluminum foil.'
''Roast them in a charcoal oven, turning occasionally, for about 40 minutes or until they're soft.'
''If you want, place them in an oven at the same temperature.'
''While roasting, prepare the cream.'
'2'
''In a saucepan, bring the white wine vinegar and green scallion to low heat.'
''When the vinegar has almost completely evaporated, remove from heat.'
'3'
''On the side, mix the egg yolk, yogurt, salt, and black pepper
Place the mixture in the saucepan and bring to low heat, stirring until it starts to simmer
Remove from heat and add the chopped savoy leaves.'
'4'
''Remove the aluminum foil, cut each sweet potato into four pieces, and pour the sauce
Garnish with the savoy leaves.'