Coarsely chop the lettuce. Squeeze a little lemon juice over the apples and pears and toss with the greens. Combine the cider, cider vinegar and sugar in a bowl and whisk in the EVOO in a slow stream (eyeball it).
Pour the dressing over the salad and season with salt and pepper. Toss the salad to combine and coat evenly with the dressing. Serve with a garnish of sliced sharp cheddar cheese