Make the quick-pickled radish: place the thin radish slices in a small bowl. Stir together the white vinegar (4 tsp total) and a pinch of sugar until the sugar dissolves, then pour over the radishes. Let sit at room temperature while you prepare the rest—the brief acid bath softens the radish slightly, tames raw bite, and adds a bright contrast to the creamy avocado.

Toast the sourdough: Heat a grill pan or skillet over medium-high heat (about 2–3 minutes). Brush each slice lightly with 1/2 tsp olive oil or rub with a cut garlic clove (optional) and toast 1–2 minutes per side until deep golden and crisp. Toasting concentrates flavor and creates a barrier so the mash doesn’t make the bread soggy — aim for a strong golden crust.

Warm and season the chickpeas: Drain and rinse the canned chickpeas well and pat dry. Warm a tablespoon (3 tsp) of olive oil in a medium sauté pan over medium heat. Add the chickpeas and 3/4 tsp smoked paprika and cook 3–4 minutes, stirring, until they’re fragrant and just starting to blister—this step blooms the smoky paprika and warms the chickpeas so the mash melds better with the avocado and lemon. If using, add the minced garlic in the last 30–45 seconds and stir to fragrant (don’t let it burn).

Mash the chickpeas: Transfer about 2/3 of the warmed chickpeas to a bowl and lightly mash with the back of a fork or a potato masher, leaving some whole chickpeas for texture. Mashing on the warm chickpeas helps them absorb olive oil and lemon and marry with the avocado for a creamy yet textured spread.

Prepare the lemon-avocado: Halve and pit the avocados and scoop the flesh into a medium bowl. Add 1 tsp fresh lemon juice per serving (1 tbsp + 1 tsp total) and a pinch of sea salt. Mash to a slightly chunky consistency — you want silkiness with small bits to give body and mouthfeel. The lemon brightens the avocado and prevents rapid browning, while salt amplifies its umami.

Combine chickpeas and avocado: Fold the warmed, partially mashed chickpeas into the mashed avocado along with the remaining whole chickpeas. Taste and adjust with more lemon, smoked paprika (reserve a little for garnish), salt, and pepper. Mixing warm chickpeas with cool avocado creates an inviting temperature contrast and ensures flavors bind together.

Dress with olive oil and chives: Stir in the remaining 1 tsp olive oil into the mash for silkiness; fold in about 3 tbsp finely chopped chives, reserving 1 tbsp for garnish. Chives provide a mild oniony brightness that lifts the fat of the avocado and oil.

Assemble the toasts: Divide the chickpea–avocado mash evenly onto the toasted sourdough slices (about 1 generous scoop per slice). Arrange 3–4 quick-pickled radish slices per serving on top for crunch and acidity. Sprinkle the reserved smoked paprika (about a pinch per serving), the remaining chopped chives, cracked black pepper, and optional flaky sea salt or red pepper flakes for texture and a finishing pop of flavor.

Final touch and serve: Let the toasts rest 1 minute so the flavors marry, then serve immediately while the bread is still crisp. The contrast between warm chickpeas, cool avocado, crisp toast, and tangy radish is what makes each bite interesting and balanced.