Don't Waste FECO: How to Reclaim Every Drop Stuck to Your Dish

Don’t waste FECO — every milligram of Full Extract Cannabis Oil you worked hard to make is worth saving. After evaporating a full liter of tincture in a large baking dish, there’s always sticky FECO residue clinging to the sides and bottom. In this guide, we’ll show you exactly how to reclaim every last drop and turn that “dont waste feco” mindset into a delicious infused drink.

What Is FECO and Why You Should Never Waste It

FECO stands for Full Extract Cannabis Oil. It’s made by taking Green Dragon tincture (cannabis soaked in alcohol) and slowly evaporating off all the alcohol — leaving behind a thick, potent concentrate. Because of its high concentration, even a small amount of leftover FECO residue stuck to your dish can pack a serious punch. This is exactly why “don’t waste FECO” is such an important principle for any home extract maker.

In this video, Herbistry420’s host 40 shows us how he made a couple of ounces of FECO using a large glass baking dish — no heat, just placing it in the oven (turned off) to evaporate over the course of a week. After scraping out the bulk of the FECO, a significant residue remained. Here’s how he reclaimed it.

Dont Waste Feco: 3 Proven Reclaim Methods

1. The Warm Milk Method (Best for Large Batches)

This is the most effective way to dont waste feco after a large batch extraction:

• Pour approximately 300 ml of whole milk (or full-fat coconut milk) directly into the dish with the FECO residue
• Place the dish in the oven on the lowest temperature setting (50–70°C / 120–160°F)
• Leave for 10–15 minutes until the residue becomes liquidy
• Use a silicone spatula to scrape and stir all sides and the bottom
• Return to the oven for another 30 minutes at the lowest setting
• Remove and carefully pour the infused FECO milk into a storage container
• Refrigerate — keeps for 1–2 weeks

Important: Keep the temperature low — you’re warming the milk, not boiling it. The goal is just to make the FECO liquidy enough to release from the glass.

2. The Razor Blade and Hot Chocolate Trick

Before the main warm milk extraction, use a razor blade to scrape as much FECO as possible from the dish. Then drop the scraper into a pot of milk and simmer on the stove. The result is a milk infused with FECO from the blade — which the host turned into a hot chocolate that had him completely blasted. This shows just how potent even the residue can be, and why you should never just wash your dish without reclaiming first.

3. Making an Infused Iced Vanilla Latte

Once you have your FECO milk, the options are almost endless. Here’s how to make a simple cannabis iced vanilla latte with your reclaimed FECO milk:

• Double shot of espresso
• 2 tablespoons vanilla syrup
• 1 tablespoon FECO milk (start low — you can always add more)
• Fill with fresh milk over ice

Other FECO milk uses: hot chocolate, plain warm milk, cannabis ice cream, or adding to your morning coffee. When you dont waste feco, the possibilities are truly unlimited.

Dosage Tips: Start Low with FECO Milk

FECO is extremely potent, and because there’s no precise way to calculate how much remains in your dish, it’s essential to start with a small amount. One tablespoon is a reasonable starting point. Pour a little, see how it makes you feel, and adjust from there. The host got blasted just from what was on the razor blade — so respect the potency and work up slowly. This is especially true when you dont waste feco and turn every last drop into a drinkable dose.