Use the thinnest setting on a mandoline to create long ribbons of cucumber. You want roughly a dozen strips.

Slice avocado thinly into 12 pieces.

Use a peeler to create thin strips of carrots.

Mix crab with 2 T. cream cheese in a small bowl.

Lay a cucumber slice flat on a cutting board. Layer avocado slice, carrots, cilantro, and about 1 T. crab mix on one end. Put a small dab of cream cheese on the other end.

Roll the cucumber strip up tightly, sealing with cream cheese, and place seam-down on a plate. Repeat with remaining cucumber strips.

Refrigerate for at least 15 minutes, to help the cream cheese harden and keep the rolls tight.

While rolls are chilling, mix mayonnaise and chili garlic sauce for dipping.

Optionally sprinkle rollups with sesame seeds. Serve chilled with dipping sauce.