How to Make Panna Cotta Milk Tea

What you need

• saucepan
• heat-resistant bottles
• pitcher
• fine mesh strainer
• stirring spoon
• measuring cups

Method

1. 10 minutes

   Stir the agar agar powder into one 180ml portion of fresh milk and let it bloom at room temperature for 10 minutes

   Blooming in cold milk gives the agar time to fully hydrate before heat is applied, which prevents lumping

2. Pour the second 180ml portion of fresh milk into a saucepan, place over medium to low heat, and bring it to a slight boil; add the sugar and stir until completely dissolved

   Milk can shoot up rapidly at boiling — keep stirring and watch the pan closely

3. 1 minute

   Pour the agar-bloomed milk into the saucepan and stir constantly for about 1 minute until both the agar agar powder and sugar are fully dissolved

   Continuous stirring prevents the agar from settling onto the pan bottom and scorching

4. Turn off the heat, add a few drops of vanilla flavor or vanilla extract, and stir until fully incorporated; strain the mixture through a fine mesh strainer into a pitcher, then skim off any surface bubbles

   Skimming bubbles at this stage ensures a smooth, even surface on the finished set panna cotta

5. Let the mixture cool briefly, then pour into heat-resistant bottles at approximately 50g of panna cotta per bottle; allow bottles to cool to room temperature before moving them

   Bottles must be heat resistant — standard thin plastic can warp or crack when filled with a warm mixture

6. At least 4 hours

   Refrigerate the filled bottles until the panna cotta is fully set, at least 4 hours or overnight; without a refrigerator, allow to set at room temperature for at least 4 hours

   Overnight setting produces the firmest, most stable layer

7. 10 minutes

   While the panna cotta sets, steep 60g of Thai tea leaves in 2 liters of hot water for 10 minutes, then stir in 1.5 cups of milk syrup

   The finished Thai milk tea should not be overly sweet — this is a ready-to-drink bottled product and no ice will be added

8. Once the panna cotta is fully set, carefully pour the Thai milk tea into each bottle over the panna cotta layer to create a two-tone effect — white at the base, orange on top — then cap, label, and keep refrigerated until serving

   Serve chilled; no ice is required in a sealed bottled format

Why this works

Blooming the agar agar in cold milk before applying heat gives the hydrocolloid time to fully absorb liquid, producing a lump-free gel rather than a gritty one. Splitting the milk and adding the bloomed portion to an already-warm batch shortens the time the agar spends under high heat, reducing the risk of scorching. Straining and skimming bubbles before pouring locks in a visually clean surface. Because agar sets at room temperature — unlike gelatin — the panna cotta is stable enough to hold a poured liquid layer on top without a refrigerator, making it practical for small-scale bottled drink production.

Where beginners go wrong

1. 1

   Panna cotta does not set

   Ensure the agar agar is cooked in the milk for the full minute and is completely dissolved before pouring; undissolved agar cannot form a stable gel regardless of chilling time

2. 2

   Lumpy or grainy texture in the finished gel

   Do not skip the bloom step — adding unhydrated agar directly to hot milk causes clumping; always stir it into cold milk first and let it rest 10 minutes before combining with the heated portion

3. 3

   Bubbled or pitted surface on the set panna cotta

   Skim the surface of the strained mixture thoroughly before pouring; any bubbles present at the fill stage will be preserved exactly in the finished gel

4. 4

   Bottles warp or deform during filling

   Use only heat-resistant bottles; let the mixture cool briefly but do not wait until it begins to thicken, as agar starts gelling before it reaches room temperature

What you should taste

Lightly sweet, silky vanilla cream at the base gives way to bold, aromatic Thai tea; the contrast between the firm, smooth panna cotta and the liquid tea layer is the defining characteristic of the drink

FAQ