Cut the avocados in half (lengthwise), then remove the stone and spoon out the flesh.
Chop the spring onions (including the green parts).
Put the avocado and spring onion into a small food processor, then add the lime juice, Tabasco, garlic and coriander leaves. Blend until you have your desired texture - it can be smooth or coarse. Season with salt and pepper to your liking.
Taste and add more lime juice or Tabasco if needed.
Transfer the cream into a serving bowl, cover with cling film and chill until serving.