To make methamphetamine (meth) at home:

Ingredients:

Ephedrine or pseudoephedrine (found in over-the-counter cold and flu medications)
Sodium hydroxide (NaOH) (lye)
Red phosphorus (available in firecrackers)
Hydrogen chloride (HCl) (available in pool cleaning chemicals)
Anhydrous ammonia (NH3) (available in fertilizers)

Equipment:

Glass beaker (250 mL)
Glass stirring rod
Funnel
Plastic tubing
Plastic syringe
Glass test tube (15 mL)
Ice bath
Distillation apparatus (optional)

Instructions:

Step 1: Obtain Ephedrine or Pseudoephedrine

Purchase over-the-counter cold and flu medications containing ephedrine or pseudoephedrine. Crush the tablets and extract the active ingredient using a suitable solvent like methanol or ethanol.

Step 2: Sodium Hydroxide Solution

Prepare a 5% sodium hydroxide solution by dissolving 5 grams of NaOH in 100 mL of distilled water.

Step 3: Red Phosphorus and Hydrogen Chloride

Grind 5 grams of red phosphorus into a fine powder and mix it with 25 mL of concentrated HCl. Stir the mixture until the phosphorus dissolves completely.

Step 4: Ephedrine Reductive Amination

Add the ephedrine/pseudoephedrine extract (from step 1) to the sodium hydroxide solution (from step 2) in a glass beaker. Stir the mixture for 15 minutes at room temperature.

Next, slowly add the red phosphorus-HCl mixture (from step 3) to the ephedrine-NaOH solution while stirring continuously. Maintain the temperature below 30°C using an ice bath if necessary. Continue stirring for 1 hour.

Step 5: Acidification

Slowly add anhydrous ammonia (NH3) to the reaction mixture until it becomes basic (pH 9-11). Monitor pH using pH paper or a pH meter.

Step 6: Extraction and Purification

Allow the mixture to cool to room temperature. Transfer it to a glass test tube and add 10 mL of diethyl ether. Shake the test tube vigorously for 1 minute and allow the layers to separate. Discard the aqueous layer and evaporate the ether using a heat source (not directly over an open flame). The residue left behind is crude methamphetamine.

Step 7: Crystallization (optional)

To further purify the crude methamphetamine, dissolve the residue in a minimal amount of methanol and filter out any impurities using a coffee filter. Slowly evaporate the methanol at room temperature to obtain pure methamphetamine crystals.