That's it for now. Go buy yourself some bottled lemon juice and throw out those moldy lemons!
Instead, I keep the pictured ingredients on hand, plus orange oil. My bottle of that has mysteriously disappeared. It was the five-ounce size and I'd had it for years. I guess I'll have to break down and buy another one, which should see me through to the end. Citrus oils are very, very potent, hence the small size of the bottle. They're distilled from the peel itself and are what give the zest its flavor. I measure them out by the drop. And I've done a blind taste test on the lemon juice with its fresh counterpart and honestly couldn't tell the difference. Frozen orange juice concentrate works very well and keeps forever, of course.