Cook ½ cup sherry vinegar, 1 tablespoon honey, 1 bay leaf and a pinch of salt in a small saucepan until syrupy, 5 to 7 minutes. Cook baby potatoes in boiling water until tender, 12 to 15 minutes; toss with olive oil and salt. Warm sliced Spanish chorizo in a small skillet until crisp. Thread the chorizo and potatoes onto skewers, alternating with chunks of tinned octopus (drained). Drizzle with the vinegar reduction.