Ocado Ripen at Home Hass Avocados. Four ripen at home avocado with a subtle and buttery flavour. Delicious sliced and added to fajitas and tacos or as a dairy alternative for a chocolate mousse. We source different varieties throughout the year to give you the best eating quality. Depending on variety the skin will vary from dark purple/black to dark green, and from knobbly to smooth.