Step 1If using gelatin sheets, soak them in a small bowl of cold water until softened, 2 to 3 minutes.
Step 2In a small saucepan, combine half the lime juice with the simple syrup and vanilla bean. Drain the gelatin sheets, squeezing out the excess water, and add them to the saucepan (if using powdered gelatin, gently sprinkle it over the liquid in the pan, allowing the powder to soak up some of the liquid and soften).
Step 3Heat the liquid over low heat, stirring occasionally just until the gelatin is dissolved. Remove from the heat and stir in the remaining lime juice. Strain the liquid and discard the vanilla bean. Divide the gelee among 12 martini glasses and refrigerate, uncovered, until set, several hours to overnight.
Step 1In a small bowl, combine the sugar and pectin.
Step 2Place the berries in a medium saucepan and pour the sugar mixture over the berries, stirring gently to combine. Cook over low heat, stirring occasionally, until the sugar is dissolved and the mixture has thickened to a jam-like consistency. Place in a nonreactive container, cover tightly and refrigerate until chilled. This makes about 2 cups of marmalade, slightly more than is needed for this recipe. The remainder will keep, covered and refrigerated, for 1 week.
Step 1Spoon 2 tablespoons of raspberry marmalade into each glass, spreading it gently and evenly over the surface of the set gelee. Add a single layer of fresh raspberries to each.
Step 2Place a sable cookie over the raspberries in each glass and then place a scoop of sorbet on each cookie. Garnish each with a meringue set on a tilt into the sorbet. Serve immediately.