Premium Fish Fertilizer
Sweet Fish Brew
Cold-fermented liquid fish fertilizer made from wild California fish byproducts and molasses. Real nutrition for your soil.
Starting at $18.00
Order NowWhy Sweet Fish Brew
Feed your soil, not just your plants
Cold Fermented
Our low-temperature fermentation preserves bioactive nutrients that heat processing destroys. More biology in every drop.
Locally Sourced
Made from wild California fish byproducts and molasses. We know where every ingredient comes from.
Soil-First Approach
Formulated to restore soil microbial health and biology — not just push short-term plant growth.
Transparent Ingredients
Fish hydrolysate and molasses. That's it. No hidden fillers, no synthetic additives, no guesswork.
How to Use
Three ways to feed your garden
Foliar Spray
Spray directly on leaves for fast nutrient uptake. Plants absorb through leaf surfaces for immediate benefit.
1.5 tbsp per gallon of waterSoil Drench
Water directly into the root zone. Feeds the soil microbial ecosystem where it matters most.
1.5 tbsp per gallon of waterCompost Booster
Add to compost piles to accelerate decomposition and enrich your finished compost with sea minerals.
Apply once every 4 weeksFor crop production: Apply 3–5 gallons per acre as a soil drench, or 1–3 gallons per acre as a foliar spray.
What Makes It Different
Not all fish fertilizers are created equal
Hydrolysate, Not Emulsion
Most fish fertilizers are emulsions — made with high heat that breaks down proteins and kills beneficial microorganisms. Sweet Fish Brew is a hydrolysate, cold-fermented to preserve the bioactive nutrients, amino acids, and microbial life your soil actually needs.
Surplus to Resource
We transform fish byproducts that would otherwise go to waste into a premium soil input. It's a circular economy model — creating value from surplus while reducing waste in the fishing industry.
Cold Fermentation Process
Our natural fermentation process uses molasses to break down fish byproducts at low temperatures over time. No high heat, no harsh chemicals. The result is a nutrient-dense liquid that's rich in sea minerals and beneficial biology.
Typical Fish Emulsion
Heat-processed at high temperatures
Proteins broken down and denatured
Beneficial microbes destroyed
Strong, unpleasant odor
Lower bioactivity
Sweet Fish Brew
Cold-fermented at low temperatures
Amino acids and proteins preserved
Beneficial biology retained
Milder, natural scent
Higher bioactive nutrient content
Product detail, label close-up,
or fermentation process photo
Founders photo, brand lifestyle shot,
or production/sourcing image
Our Story
Founded by a Fisher, a Rancher, and an Ecologist
Marino Soil Foods was born from a shared commitment to regenerative agriculture and the belief that what nourishes the soil nourishes everything. Each founder brings hands-on experience from the industries that source our ingredients — fishing, ranching, and ecological science.
We're a women-owned company rooted in California's Central Coast, transforming underutilized resources into solutions that regenerate soil, support local food systems, and strengthen the connection between land and sea.
100%
Locally sourced
ingredients
0.5-0.4-0.6
Guaranteed
NPK analysis
1st
In California to produce
fish hydrolysate at scale
Questions
Frequently Asked
It has a natural scent — you're working with fermented fish, so there is an odor. However, because Sweet Fish Brew is cold-fermented (not heat-processed like emulsions), the smell is significantly milder. It dissipates quickly after application, and most gardeners find it very manageable.
Fish emulsion is made with high heat, which breaks down proteins and kills beneficial microorganisms. Fish hydrolysate is cold-processed, preserving amino acids, enzymes, and microbial life. The result is a more bioactive product that feeds your soil biology, not just your plants.
Yes. Sweet Fish Brew is made from natural ingredients — California wild fish byproducts and molasses. It's suitable for use on vegetable gardens, fruit trees, herbs, and all edible crops. Follow the application rates on the label.
For home gardeners using the recommended rate of 1.5 tablespoons per gallon of water applied once every four weeks, a single gallon of Sweet Fish Brew will last most home gardens an entire growing season.
Store in a cool, dry place away from direct sunlight. Keep the container sealed when not in use. The product is shelf-stable but performs best when used within the growing season after opening.
Yes, we ship throughout the United States. Shipping costs are calculated at checkout based on your location and order size.
Ready to grow?
Give your soil what it's been missing
Cold-fermented. Locally sourced. Made to restore your soil — from the sea to your garden.
Shop Sweet Fish BrewSweet Fish Brew
Cold-fermented liquid fish fertilizer made from California wild fish scraps.
