diff --git a/docs/files/recipes/alumcrystalsilk.md b/docs/files/recipes/alumcrystalsilk.md
index 2e5a82e0d54969b1e650598912b505e8768b18e7..c16e789fceefa59009866e6294f5b3044a16ab66 100644
--- a/docs/files/recipes/alumcrystalsilk.md
+++ b/docs/files/recipes/alumcrystalsilk.md
@@ -30,7 +30,7 @@ Final form achieved after: 1 day
 
 ###Ingredients
 
-* **Alum powder - 125 g** (potassium aluminium sulfate or potash alum), plus some more just in case
+* **Alum powder - 125 g** (potassium aluminium sulfate dodecahydrate), plus some more just in case
 	* we will try to reorganize these molecules into crystals. 
 * **Water - 400 ml/gr**
 	* To dissolve the alum powder and reorganize into a crystal 
diff --git a/docs/files/recipes/mordants_tannins.md b/docs/files/recipes/mordants_tannins.md
index 74d3cb80645adb29626a6c512ca0eff5bd9d8fc9..77b5550174b4020056493d43bfa3684e9f27ea49 100644
--- a/docs/files/recipes/mordants_tannins.md
+++ b/docs/files/recipes/mordants_tannins.md
@@ -30,13 +30,14 @@ variable
 
 One of these or a combination (see below):
 
-* **Alum** (*potassium aluminium sulphate*)
+* **Alum** (*potassium aluminium sulfate dodecahydrate*)
 * **Cream of Tartar** *(tartaric acid)*
 * **Oak galls**, the whole nut, or powder (*galnut extract, gallotannic acid*)
 * **Soda ash** *(sodium carbonate)*
 * **Soy milk** (soya milk), unflavoured, unsweetened
 * **Symplocos** (*symplocos cochinchinensis, horse sugar, sweetleaf*), leaves or powder, a plant-based alum mordant, e.g. from the Bebali Foundation. Use the yellow ones that have fallen off the shrubs naturally. 
-* **Iron sulphate** powder, or iron liquor
+* **Iron sulphate** (*ferrous sulfate*) powder
+* **Iron liquor** (*ferrous acetate*) made at home by putting rusty nails or other iron scraps in vinegar for a few weeks.
 
 
 ###Tools
@@ -213,7 +214,7 @@ Iron sulphate is the least polluting after alum and is a waste product. It shoul
 
 Iron mordant baths may be discarded in municipal waste systems (down the drain), don't dump directly in nature though. **Safety note:** always wear gloves when using this, wear goggles and a mouth mask when measureing iron sulphate powder, and keep away from pets. 
 
-You can make your own iron mordant (called iron liquor) by putting some scrap metals - like old nails - in a glass jar and cover it with 2 parts water an one part white vinegar. This won't be as precise because the amount of iron sulphate increases overtime. Just start with adding a little bit to a pot of water and add more until you achieve the color you want. 
+You can make your own iron mordant (called iron liquor or *ferrous acetate*) by putting some scrap metals - like old nails - in a glass jar and cover it vinegar (or part vinegar, part water) This won't be as precise because the amount of iron sulphate increases overtime. Just start with adding a little bit to a pot of water and add more until you achieve the color you want. 
 
 Seal with a lid and let it get rusty for 2 weeks. Label it and keep away from pets and kids. 
 
diff --git a/docs/files/recipes/oniondye.md b/docs/files/recipes/oniondye.md
index a7eaa4e30e5591b8b9466ba376cc66da9b7b382b..ddf05681f5265131f212860ce6c5d48fe8dee2c4 100644
--- a/docs/files/recipes/oniondye.md
+++ b/docs/files/recipes/oniondye.md
@@ -73,7 +73,7 @@ Approx. 200 ml
 
 1. **Dyeing with onion dye**
 
-	- Optional (not necessary) mordant the fibres with alum for color fastness
+	- Optional (preferred) mordant the fibres with alum or other mordant for color fastness
 	- Put the wet fibres in the dyebath and simmer for an hour, then leave overnight
 	- Rinse and dry
 	- Optional: modify with PH modifiers