Add chai tea concentrate to an ice-filled glass. Pour milk into the glass.

Top the drink with pumpkin cream cold foam and sprinkle pumpkin pie spice over the top.

For the pumpkin cream cold foam, mix milk, cream, vanilla syrup, and pumpkin spice sauce in a mason jar and shake to combine. Alternatively, stir all ingredients together in a bowl.

To turn the mixture into cold foam, use an electric frother, hand mixer, or blender until the mixture turns into a foam.

Put condensed milk in a medium saucepan over medium-low heat with pumpkin puree, pumpkin pie spice, and salt. Stir together and heat for about 5 minutes until it begins to bubble.

Remove from heat and stir in vanilla extract. Pour the pumpkin spice sauce into a heat-proof jar or bowl and place in the fridge to cool.