Place the coffee, sugar, cream, milk, vanilla beans and agar agar powder into a saucepan with a candy thermometer on medium high heat until it reaches 85C/185F.
Whisk to combine and ensure the powder dissolves and cools for 3 minutes.
Pour into your serving glasses and place in the fridge to set for 1 hour, it shouldn’t be jiggly and if it is, leave for a further 30 minutes.
Kahlua Jelly
One the panna cotta is no longer jiggly, place the kahlua, coffee, sugar and agar agar powder into a saucepan with a candy thermometer until the liquid has reached 85C/185F.
Remove from the heat immediately and continue whisking to dissolve the agar agar properly and allow to cool for a 3 minutes.
Pour into your serving glasses and place in the fridge to set, preferably overnight for the entire dessert to set.
Serve and enjoy.
Notes
Cream: The cream adds a traditional element and weight to the liquid for the panna cotta to set as well as complimenting the coffee for this dessert.
Agar agar gelatin: Using agar agar which is a vegan alternative to gelatin can be a bit finicky, but follow the recipe exactly as this was thoroughly tested. Alternatively, sub 2 leaves gelatin for the panna cotta and 1 leaf for the jelly. This gelatin needs to be measured with a scale because even 1 or 2 grams more or less can result in a very different consistency. Additionally, agar agar also needs heat to dissolve which is different from gelatin which can dissolve at room temperature. So you will need a candy thermometer to ensure it reaches 85C/185F for the agar agar to dissolve.
Candy thermometer: Due to the delicate nature of agar agar, a candy thermometer helps ensure your panna cotta and jello will set. If using a different type of gelatin, a candy thermometer will not be required.
The alcohol flavor: The amount of kahlua in the jelly is enough that despite heating to set the agar agar you can still taste the liqueur.