Bring cloudberries to a low simmer in saucepan to soften and release juices; strain in sieve over bowl, pressing to extract as much juice and pulp as possible
Discard seeds; yield about ½ cup or 125ml (this will take some time and best done in advance)
Line an 8×8 inch pan with parchment paper; butter both sides of paper
Combine cream and butter in medium pan; warm over heat until butter melts
Remove from heat and stir in cloudberry puree; set aside
In large heavy pot; combine sugar, syrup and water mixing into grainy paste; wipe side to prevent sugar crystals from forming above sugar mixture
Using candy thermometer, bring mixture to a boil over medium-high heat without stirring; once mixture reaches 250°F/121°C, remove from heat
Pour cloudberry mixture into sugar mixture and combine; stop whisking and return pot to medium-high heat
When 245-250°F/118-121°C is reached, remove from stove; quickly whisk in vanilla and pour into prepared pan
10. Allow to set at room temperature for at least two hours (preferably overnight)
11. When caramel has set, place on cutting board; cut rectangles with sharp knife
12. Sprinkle with the sea salt; wrap individually in wax or parchment paper