A wonderful appetizer to enjoy with friends when San Francisco's Indian summer warms the city. The true way to 'cook' the fish is to marinate it in citrus juice overnight, but I find that the poaching process is faster and an easy way to judge if it is indeed cooked. I often buy precooked shrimp (but NOT frozen!) and just poach the scallops. Best when served with cold beer (we prefer Pacifico®) and fresh limes. Using quality and sturdy tortilla chips is essential. Please note that the serving size is meant for appetizer portions.