Step 1: Gather all your ingredients and equipment. Ensure your whole milk is well chilled and you have a powerful blender ready.
Step 2: Pour the cold whole milk into your blender. Starting with the liquid helps the blades move more efficiently.
Step 3: Add the unsweetened cocoa powder, granulated sugar, pure vanilla extract, and the pinch of salt to the blender.
Step 4: Secure the lid and blend these ingredients for about 15-20 seconds, or until the sugar has completely dissolved and the cocoa powder is fully incorporated with no visible lumps. Scrape down the sides if needed.
Step 5: Add 2 cups of ice cubes to the blender. If you prefer an extra-thick wendys frosty recipe, you can add up to 3 cups of ice.
Step 6: Blend on high speed, starting with pulses to break down the ice, then continuously blending until the mixture is thick, smooth, and has the desired frosty consistency. This typically takes 30-60 seconds. Use a tamper if your blender has one, or briefly stop and stir with a spatula to ensure all ice is blended.
Step 7: Immediately pour your homemade wendys frosty recipe into chilled glasses and serve. Enjoy it with a spoon, a straw, or even some fries for dipping!