In a pot, add in the whole milk, evaporated milk and sugar and stir evenly, bring the mixture to a simmer
When mixture is at a simmer, add in the instant coffee and tea bags and cover with lid.
Set aside and let mixture steep for 10-15 minutes.
In a large bowl, beat egg and egg yolk until well combined, making sure there are no egg white strands visible.
Pour the milk mixture into the egg mixture while continuously whisking.
Whisk until mixture is evenly combined then strain the mixture through a sieve
Pour the mixture into ramekins, only filling to 3/4 full
Place ramekin into hot water bath, making sure water reaches up to 3/4 of the ramekin
Bake at 150C for 40 minutes
After 40 minutes, the top should look set but might still be quite jiggly, let rest to room temp then place in fridge and it will continue to further set