Cucumber purée (with peel)

David Fisher, The Complete Photo Guide to Soap Making (Creative Publishing International, 2018), p. 113: "keep the additives to no more than 5 or 6 percent of the soap’s total weight—or 1 ounce (28 g) per 1 pound (454 g) of soap"; "If you leave chunks of fruit or other additives in the soap, they are likely to turn rancid or moldy, or both". P. 114, cucumber purée soap: "Though it contains more than 95 percent water"; it "adds a lovely natural pastel yellow-green color"; the purée replaces "half the lye-water" and is added to the batter at light trace.

USDA FoodData Central, food 168409: Cucumber, with peel, raw.

Heidi Corley Barto, The Natural Soap Chef (Ulysses Press, 2012), chapter 5: "When adding lye to a purée, I always use an ice bath"; the purée is the lye liquid, for 566 g of oils: 215 g of chilled puréed carrots (38 % of the oils), 150 g of canned pumpkin with 65 g of water (26.5 %), 215 g of a cucumber and coconut milk purée (150 g cucumber to 100 g coconut milk). Chapter 3: sage infused in the olive oil and a sage paste at trace; peppermint tea as the lye liquid, with the steeped leaves at trace.

Lovely Greens, cucumber soap: "you can replace the water content of your soap recipes with up to 100% cucumber"; "there is a risk that your final soap bars may turn out tan in color. To avoid this, I’d advise freezing the cucumber juice before adding the lye"; purée at light trace, sieved, since "Chunks, however small, can add unattractive splotches".

Anne-Marie Faiola, Pure Soapmaking (Storey Publishing, 2016), recipes in chapters 8–10. 100% Castile-Brine Stamped Cube: "1 tablespoon sea salt" dissolved in the water before the lye, for 33 oz of olive oil. Oatmeal Soap for Babies: "2 teaspoons bentonite clay dispersed into 4 tablespoons distilled water" and "2 tablespoons colloidal oatmeal" at thin trace, for 15.1 oz of oils whose olive oil is infused with "2 tablespoons Egyptian chamomile" in a teabag in 14.5 oz of oil, 2 hours in a double boiler. Nettle & Yarrow Upcycle: "2 teaspoons dried yarrow powder dispersed into 1 tablespoon apricot kernel oil" in one of two halves of 24.1 oz of oils. Buttermilk Honeycombs: "3 tablespoons honey" at thin trace for 25.1 oz of oils. Banana Cream Pie Layered Bars: "1.2 ounces banana, 1.5 ounces whipping cream, and 1.5 ounces water, pureed" at thin trace for 35.2 oz of oils, then the freezer "for 24 hours to avoid overheating from the sugars in the banana". Annatto-Yarrow with Embeds: "1 tablespoon spirulina powder" and "1 teaspoon yarrow powder", added "directly to the hot lye-water", for 7.1 oz of oils; "2 tablespoons poppy seeds" in one of two halves of 34 oz of oils. Cucumber Layers: "1 ounce cucumber puree" into the whole batch at thin trace, 22 oz of oils. Gardener Scrub with Coffee Grounds: 50 oz of oils, the batter divided "into four exactly equal sections", one each for "5 teaspoons paprika", "5 teaspoons ground orange peel dispersed into 1 tablespoon of canola oil", "5 teaspoons brewed coffee grounds" and "10 teaspoons green zeolite clay". Indigo-Annatto Negative-Space Funnel Pour: "1.5 tablespoons indigo powder" whisked into the lye-water and "1 tablespoon alkanet root powder dispersed into 1 ounce sunflower oil" at very thin trace, 35.2 oz of oils; "In order to bring out the best color for the indigo powder, the soap must go through a hot gel phase". Black Tea Funnel Pour: 5.5 oz of brewed black tea added at thin trace, 5.5 oz of water for the lye, 33.1 oz of oils. Goat Milk Sunset Burst: "0.7 ounce goat milk powder dissolved in 1 ounce distilled water" for 17.1 oz of oils and "1 ounce goat milk powder" for 25.2 oz, added at trace: "To help avoid scorching, this recipe incorporates the goat milk by using a concentrated solution of powdered goat milk."

Lovely Greens, natural soap colorants: cinnamon, "use up to 1 tsp ground cinnamon powder PPO. Be aware that cinnamon leaves a slightly gritty feeling"; beetroot, "Warm to dull brown", "Unfortunately, beets do not color CP/HP soap red"; black walnut hull powder, "Add powder at trace and be aware that they create a scratchy or exfoliating texture"; red sandalwood, "Add 1/4-1/2 tsp powder PPO at trace after premixing in a little oil. Can be very scratchy if you use more than this"; woad, "Add 1-2 tsp powder PPO to the lye solution"; rose hips, "Up to 1 tsp ground rosehip powder PPO"; nettle leaf, "muted green", "Premix dried and powdered nettle leaf with a little water and add at trace. Use 1-3 tsp PPO"; kelp, "Dark green", "at trace at up to 3 tsp PPO. Pre-mix in an equal amount of distilled water"; sage, "muted green that fades with time", or "1 tsp PPO dried sage at trace for dark speckles"; peppermint, "1 tsp PPO finely ground peppermint leaves at trace"; liquid chlorophyll, "stunning greens from using about 1 TBSP PPO", fading "into a greeny-yellow"; cucumber, "initially green but usually fades to a muted yellow"; chamomile, "Infuse flowers in distilled water and use the strained liquid to make the lye solution"; green tea, "Brown-green"; rhassoul clay, "Brown"; French green clay, "pale pastel green to earthy green"; "plant-based greens tend to be fugitive". PPO is per pound of oils.