Line a large baking tray with paper towels Fit the K-Beater to the machine
Add water into a large saucepan until ⅔ full Heat over a high heat until boiling Add salt and potatoes into the saucepan Simmer gently for 10 minutes or until cooked through Drain the potatoes into a colander Set aside and let cool for 10 minutes
Fit the Fine Milling Disc, smooth side up, to the Food Mill attachment Attach the 7L Mixer bowl to the machine Assemble the Food Mill attachment to the machine, fit the Paddle Tool Pass half of the cooled potatoes on speed 1 through the attachment Scrape the sides of the Food Mill with a spatula Repeat the same process with the remaining potatoes
Add egg yolks, butter, cheddar cheese, ham, salt and pepper into the 7L Mixer bowl Attach the Mixer bowl to the machine and fit the splash guard Mix on speed Min for 1 minute or until well combined Shape the mixture into 24 croquettes, approx. 8 cm x 3 cm and set aside
Place three medium bowls on the work surface Add plain flour into the first bowl Add eggs into the second bowl Add panko breadcrumbs into the third bowl Place a large baking tray next to third bowl Dip each croquette into the flour, followed by eggs and then breadcrumbs until coated Place the croquettes on the baking tray
Fill a large, heavy-based pot with sunflower oil until approx. ⅓ full Alternatively, use a deep fat fryer Heat the oil until 175ºC Use a food safe thermometer to check the temperature Alternatively, carefully dip the end of a wooden spoon into the oil If you see many small bubbles form around the spoon and they start to float up, the oil is ready If the oil is bubbling aggressively, turn the heat down and check again Working in batches, carefully transfer the croquettes into the pot Fry for 3 minutes or until golden brown Using a slotted spoon, carefully transfer the croquettes onto the prepared baking tray Repeat the same process with the remaining croquettes
To make the bravas sauce Add olive oil, passata, garlic, smoked paprika, balsamic vinegar, sugar, salt and tabasco into a medium saucepan Simmer over a medium heat for 10 minutes, stirring occasionally
Serve Serve the croquettes with the bravas sauce
Substitutions Sunflower oil can be replaced with groundnut oil