In a medium bowl, add garlic, red onion, cilantro, tomato and lime juice.
Slice avocado, remove and reserve pit. Run a knife or fork vertically then horizontally. Scoop flesh with spoon.
Add avocado in bowl. Note: I prefer chunky avocados. If you like it smooth, use a potato masher to mash avocado.
Stir in cumin and salt to taste.
Add sliced fresh jalapeno or pickled jalapeno with the mixture or garnish on top.
Immerse 2 avocado pits in the mixture to prevent the browning process.
Cover top with saran wrap. Saran wrap should touch top of dip and seal the edges. This will release trapped air and will also help in keeping it from browning.
Notes
If you prefer a smoother avocado texture, scoop the flesh and place in a bowl with lime juice. Mash with a potato masher then add all the ingredients and seasoning.