Steam the potatoes for about 20 minutes until soft when pierced with a fork. Cool.
Mix the diced red onion and hard boiled eggs together in a small bowl then add the sour cream and Sir Kensington's Mayonnaise, mix well.
Cut a very small piece from each end of the potatoes then cut the potatoes in half. Set the potatoes on their ends with the center cut facing up.
Mound a small amount of the sour cream mixture into the center of each potato half. If necessary, you can make a small hollow in the potato.
Top the sour cream mix with a little of the caviar.
Place a piece of green onion or chive on top and sprinkle with a bit of the paprika.
Notes
Gr8 Do-Ahead Tip:
The cream can be mixed early in the day. Cover and chill. The potatoes can be steamed up to a day ahead. Refrigerate them covered, then cut when ready to assemble.
Gr8 Tip:
For guests who don't like caviar, this appetizer is also delicious with just the cream, green onion and paprika.