Dreams about family members, especially those like a grandmother, often symbolize wisdom, nurturing, and a connection to your roots. In your dream, being at your grandmother's home suggests a sense of comfort and familiarity.

Cutting an avocado can represent new beginnings, health, or nourishment, as avocados are often associated with abundance and well-being. Sharing your knowledge about preserving the avocado with lemon or lime juice indicates a desire to share wisdom and care for others, reflecting your nurturing side.

Overall, this dream may suggest that you are in a phase where you are looking to connect with your family heritage and values while also considering how to maintain or preserve important aspects of your life. It might also indicate that you are exploring ways to take care of yourself and those you love, or it could signify a new opportunity or idea that you want to nurture.

Consider how these themes resonate with your current life situation and what aspects of your family or personal growth you might want to focus on.