Combine the coconut cream, sugar, vanilla, and salt in a small saucepan over medium-high heat. Bring the mixture to a boil, then remove it from the heat.
Alternatively, release the panna cotta from the bowls by placing each bowl in a shallow dish of hot tap water for 30 to 60 seconds to loosen it. Then, invert the bowl onto a serving plate, tap the bottom of the bowl, and release the panna cotta.