This recipe is for Thomas Joseph, director of all things food at Martha Stewart: friend, cucumber freak, Virgo, and one of the most talented men I know. We’ve made so many salads together, and so many strange snacks — some great, like this one, others too foul to mention (lettuce and tomato sauce should never be mixed). He’s taught me many important lessons throughout the years, but perhaps “don’t be stingy” is one of the best. Use plenty of seeds on this — they give great flavor and crunch — and use your best olive oil, as it makes a big difference. It’s also great served with a slice of sourdough or pita…