"My way" croquettes with cod fish mousse - bolinhos de bacalhau - Brazil

Ingredients

• 75 g plain flour
• 60 g water
• a pinch of sugar
• 15 g of grated Parmigiano Reggiano
• 3 g fresh yeast
• 2 g salt
• 230 g semi-skimmed milk
• 150 g salt cod
• sunflower oil to taste (depending on how long the salt cod has been dried – I use about 80g)
• 1 garlic clove
• 1 medium sized potato
• extra virgin olive oil
• salt to taste
• 6 tsp grated Parmigiano Reggiano
• wild fennel flowers