Can I use frozen shrimp for ceviche?
Yes, but thaw completely and ensure it was previously frozen (this kills parasites). Fresh-never-frozen shrimp should not be used raw.
How long does ceviche cure in the citrus juice?
Typically 15–30 minutes for shrimp ceviche. The shrimp is ready when opaque throughout; over-curing can make it tough.
What is chile de arbol powder and can I substitute it?
It's a dried chile with mild heat and fruity notes. Substitute with cayenne (start with 1/4 tsp), chili powder, or omit if you prefer milder heat.
Is ponzu sauce essential to this recipe?
No. It adds umami depth but can be omitted or replaced with a splash of soy sauce or additional lime juice.
Can I make ceviche ahead?
Prepare components separately; toss together no more than 1–2 hours before serving to prevent the shrimp from over-curing and vegetables from becoming soggy.