Add coconut milk, sugar, and salt to a small saucepan.
Bring to a boil over medium-high heat, stirring constantly. Remove from heat and set aside.
In a small bowl, add agar-agar powder and water. Stir to combine.
Stir that mixture into the coconut milk mixture until combined.
Transfer the liquid to a glass dish and refrigerate for 2 hours.
Once the mixture has cooled and solidified, cut the jelly into 2" x 2" squares. Serve and enjoy!
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Notes
Follow the instructions on the agar-agar package to dissolve it properly using the correct amount of water. Additionally, ensure that the agar-agar is completely dissolved before adding it to the coconut milk mixture. This will help avoid any lumps or uneven texture in your jelly.
Once you have added the agar-agar to the coconut milk, continue stirring for a few minutes to make sure it is evenly distributed and to prevent any settling at the bottom of the saucepan.
Let the jelly cool to room temperature before placing it in the refrigerator to set.
Add a few drops of vanilla extract for extra flavor.