Double F Vocabulary Words

Or a stuff-up

Or fluff.

yeah, its the other side

And 'Dufferesse' for golfer.

Saffron itself is red/orange-ish red (Wikipedia calls it "crimson", which may or may not be helpful!) by itself. I've seen/used dark red to light orangey-red, but never seen saffron itself being pure orange or yellow (though there may be different varieties with different availabilities in different countries). As someone above noted, it does TURN things yellow--rice, chicken, your cutting board, your hands...

Excellent! I was thinking that myself. Wish the clue had been "expensive edible fungus".

Without entering into the merits and demerits of tip-based employment, most people working in the service industry in the USA are legally hired with a base pay significantly lower than the mandated minimum wage, with the expectation that tips will make up the difference, and that having a significant portion of their pay dependent on tips would motivate them to provide better service. Therefore, rather than being a generous but optional token of appreciation, tipping is commonly expected and deeply embedded into the culture; a 15 to 20% tip is considered standard. To tip much less than that, or not at all, would be seen as inconsiderate and rude, and you would be "stiffing" the worker.