In a large bowl, combine the heavy cream, sweetened condensed milk, maple syrup, vanilla extract, pumpkin puree, and pumpkin pie spice. Whisk until well combined.
Measure out ⅓ to ½ cup of the mixture for a single serving into a smaller bowl (unless making multiple servings). Using a hand mixer, whip the cold foam on high speed for 30 to 45 seconds until fluffy. (Store any leftover unwhipped cold foam in a mason jar in the fridge for up to a week. When ready to use, transfer a single serving to a small bowl and whip with an electric mixer.)
Pour your cold coffee into a glass and add your desired sweetener, such as vanilla syrup or maple syrup. Top the coffee with the luscious pumpkin cold foam. Finish with a sprinkle of pumpkin spice and savor every sip!