Step 1: Prepare the Risotto: In a large saucepan, melt 2 tablespoons of butter over medium heat. Add your finely diced yellow onion and cook for about 5 minutes, stirring occasionally, until softened and translucent. Toss in the thinly sliced or minced garlic and cook for just another minute until fragrant. Now, add the Arborio rice and stir for 1-2 minutes until the edges of the grains start to look a little translucent. Pour in the dry white wine and stir until it’s completely absorbed by the rice.
Step 2: Cook the Rice: Start adding the warmed chicken broth one ladleful at a time. Stir constantly and patiently, allowing each addition to be fully absorbed by the rice before you add the next. Keep going for about 18-20 minutes, or until the rice is creamy and tender, but still has a slight bite (al dente). Adjust broth as needed.
Step 3: Finish the Risotto: Once your risotto is creamy, remove the saucepan from the heat. Stir in the remaining 2 tablespoons of butter, the grated Parmesan cheese, the lemon zest, and the heavy cream. Stir until perfectly combined and rich. Season with salt and pepper to your taste.
Step 4: Chill the Risotto: Spread the hot risotto in a thin, even layer on a baking sheet. Pop it into the refrigerator for at least 1 hour, or until it's completely cold. This chilling process makes the risotto firm up, so it's much easier to handle and shape into balls.
Step 5: Form the Arancini: Take about 2-3 tablespoons of the cold risotto into your palm. Gently flatten it into a disc. Place one small cube of mozzarella cheese right in the center. Then, carefully shape the risotto around the cheese, pressing firmly to form a tight, compact ball. Ensure the cheese is completely enclosed.
Step 6: Breading Station: Set up three shallow dishes. In the first, put your flour. In the second, your whisked eggs. In the third, your panko breadcrumbs. Take each arancini ball and first roll it gently in the flour, making sure it's lightly coated. Then, dip it into the egg, letting any excess drip off. Finally, roll it generously in the panko breadcrumbs, pressing lightly to ensure an even and thick coating.
Step 7: Fry: In a deep pot or a Dutch oven, heat 2-3 inches of vegetable or canola oil to 350°F (175°C). Carefully lower the arancini into the hot oil in batches, being careful not to overcrowd the pot. Fry them for about 4-5 minutes, turning them occasionally, until they are beautifully golden brown all over. Use a slotted spoon to carefully remove them from the oil and place them on a plate lined with paper towels to drain any excess oil.
Step 8: Serve: While your arancini are hot and fresh, warm up your favorite store-bought tomato or arrabbiata sauce. Serve these incredible crispy balls with the warm sauce for dipping.