The OED defines an elder, simply, as the senior of two or more individuals - no age specified. 'Elder', as an adjective, conveys the same meaning. This is an interesting question. There are no standard industry answers, just as there isn't a standard label (senior, senior citizen, elderly, old, 65+, etc.)
Bake the trout for 10 minutes, then unfold the packet far enough to check the doneness. When done, trout is moist and flaky with an opaque appearance. Return the fish to the oven and continue baking if necessary. Trout usually cooks within 20 minutes, but may require up to 30 minutes, depending on the size of the fish.
1 Season with salt and pepper. 2  Season trout all over with salt and pepper. 3  Heat remaining oil in a large frying pan over medium heat. 4  Add fish, skin-side down, and cook, without moving, for 4 minutes or until skin is crisp. 5  Turn and cook for a further 2 minutes. 6  Transfer to a warm plate for 2 minutes to rest. Season with salt and pepper. 2  Season trout all over with salt and pepper. 3  Heat remaining oil in a large frying pan over medium heat. 4  Add fish, skin-side down, and cook, without moving, for 4 minutes or until skin is crisp. 5  Turn and cook for a further 2 minutes. 6  Transfer to a warm plate for 2 minutes to rest.